<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:01a02127-675e-7a3b-babc-3d65e6439005,g:bb5af7f0-bd7e-4db0-b31c-f3abc0d64d96-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.gm.com/role/CONDENSEDCONSOLIDATEDINCOMESTATEMENTS" xlink:type="simple" xlink:href="gm-20260930.xsd#CONDENSEDCONSOLIDATEDINCOMESTATEMENTS"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/CONDENSEDCONSOLIDATEDINCOMESTATEMENTS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_01a02127-6a92-785c-94fc-a919a822b5e2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_01a02127-6a92-7e95-92b0-e4c96473da9a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-785c-94fc-a919a822b5e2" xlink:to="loc_us-gaap_StatementTable_01a02127-6a92-7e95-92b0-e4c96473da9a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6a92-76b5-8c1d-b3a85870d55c" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a02127-6a92-7e95-92b0-e4c96473da9a" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6a92-76b5-8c1d-b3a85870d55c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6a92-76b5-8c1d-b3a85870d55c_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6a92-76b5-8c1d-b3a85870d55c" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6a92-76b5-8c1d-b3a85870d55c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6a92-77e8-a8d9-edf2a9f122ea" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6a92-76b5-8c1d-b3a85870d55c" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6a92-77e8-a8d9-edf2a9f122ea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_AutomotiveMember_01a02127-6a92-73e6-946c-63fec0e3713f" xlink:href="gm-20260930.xsd#gm_AutomotiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6a92-77e8-a8d9-edf2a9f122ea" xlink:to="loc_gm_AutomotiveMember_01a02127-6a92-73e6-946c-63fec0e3713f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6a92-7863-9ef9-cd5d6da577f6" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6a92-77e8-a8d9-edf2a9f122ea" xlink:to="loc_gm_GmFinancialMember_01a02127-6a92-7863-9ef9-cd5d6da577f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract_01a02127-6a92-76ef-87e2-df7fe005ee6b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenuesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-785c-94fc-a919a822b5e2" xlink:to="loc_us-gaap_RevenuesAbstract_01a02127-6a92-76ef-87e2-df7fe005ee6b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a02127-6a92-77df-be0f-6103a15fa497" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_01a02127-6a92-76ef-87e2-df7fe005ee6b" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a02127-6a92-77df-be0f-6103a15fa497" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueNotFromContractWithCustomer_01a02127-6a92-76fe-a5bb-774b90774fd5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueNotFromContractWithCustomer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_01a02127-6a92-76ef-87e2-df7fe005ee6b" xlink:to="loc_us-gaap_RevenueNotFromContractWithCustomer_01a02127-6a92-76fe-a5bb-774b90774fd5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_01a02127-6a92-77b0-9ffa-14b961bad281" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_01a02127-6a92-76ef-87e2-df7fe005ee6b" xlink:to="loc_us-gaap_Revenues_01a02127-6a92-77b0-9ffa-14b961bad281" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpensesAbstract_01a02127-6a92-7b00-9126-3dda540138de" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostsAndExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-785c-94fc-a919a822b5e2" xlink:to="loc_us-gaap_CostsAndExpensesAbstract_01a02127-6a92-7b00-9126-3dda540138de" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_01a02127-6a92-7929-9e07-5cc1219974c8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_01a02127-6a92-7b00-9126-3dda540138de" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_01a02127-6a92-7929-9e07-5cc1219974c8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingCostsAndExpenses_01a02127-6a92-71c0-893e-7e76fbb2963c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingCostsAndExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_01a02127-6a92-7b00-9126-3dda540138de" xlink:to="loc_us-gaap_OperatingCostsAndExpenses_01a02127-6a92-71c0-893e-7e76fbb2963c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_01a02127-6a92-7fb1-a9de-a92ea86ef646" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_01a02127-6a92-7b00-9126-3dda540138de" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_01a02127-6a92-7fb1-a9de-a92ea86ef646" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_01a02127-6a92-7d62-b649-fe481e360c54" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_01a02127-6a92-7b00-9126-3dda540138de" xlink:to="loc_us-gaap_OperatingExpenses_01a02127-6a92-7d62-b649-fe481e360c54" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_01a02127-6a92-751d-a484-85082be8aee9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-785c-94fc-a919a822b5e2" xlink:to="loc_us-gaap_OperatingIncomeLoss_01a02127-6a92-751d-a484-85082be8aee9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_01a02127-6a92-76be-ba7b-6cc014f89e52" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-785c-94fc-a919a822b5e2" xlink:to="loc_us-gaap_InterestExpenseNonoperating_01a02127-6a92-76be-ba7b-6cc014f89e52" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_01a02127-6a92-71bc-ba67-196463abf759" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-785c-94fc-a919a822b5e2" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_01a02127-6a92-71bc-ba67-196463abf759" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_IncomeLossFromEquityMethodInvestmentsLessIncomeFromOperationalJointVenture_01a02127-6a92-76dc-b715-5b928f44a7ac" xlink:href="gm-20260930.xsd#gm_IncomeLossFromEquityMethodInvestmentsLessIncomeFromOperationalJointVenture"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-785c-94fc-a919a822b5e2" xlink:to="loc_gm_IncomeLossFromEquityMethodInvestmentsLessIncomeFromOperationalJointVenture_01a02127-6a92-76dc-b715-5b928f44a7ac" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a02127-6a92-7089-9edf-4de5c76aab58" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-785c-94fc-a919a822b5e2" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a02127-6a92-7089-9edf-4de5c76aab58" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_01a02127-6a92-72b9-bb46-2c91e1fc6c15" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-785c-94fc-a919a822b5e2" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_01a02127-6a92-72b9-bb46-2c91e1fc6c15" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_01a02127-6a92-7c57-a8be-5c62a1716858" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-785c-94fc-a919a822b5e2" xlink:to="loc_us-gaap_ProfitLoss_01a02127-6a92-7c57-a8be-5c62a1716858" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_01a02127-6a92-7fd3-b49a-de8819d90d70" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-785c-94fc-a919a822b5e2" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_01a02127-6a92-7fd3-b49a-de8819d90d70" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_01a02127-6a92-7d4f-8a06-197144b6cea3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-785c-94fc-a919a822b5e2" xlink:to="loc_us-gaap_NetIncomeLoss_01a02127-6a92-7d4f-8a06-197144b6cea3" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_01a02127-6a92-70da-9d1d-b7655909b966" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-785c-94fc-a919a822b5e2" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_01a02127-6a92-70da-9d1d-b7655909b966" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_01a02127-6a92-77a2-9cfd-976b309b902a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-785c-94fc-a919a822b5e2" xlink:to="loc_us-gaap_EarningsPerShareAbstract_01a02127-6a92-77a2-9cfd-976b309b902a" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_01a02127-6a92-77e7-b546-cd4284fb2d07" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_01a02127-6a92-77a2-9cfd-976b309b902a" xlink:to="loc_us-gaap_EarningsPerShareBasic_01a02127-6a92-77e7-b546-cd4284fb2d07" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_01a02127-6a92-7e43-b17c-223da3e4393e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_01a02127-6a92-77a2-9cfd-976b309b902a" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_01a02127-6a92-7e43-b17c-223da3e4393e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_01a02127-6a92-7b63-bb6b-d68867afd20b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_01a02127-6a92-77a2-9cfd-976b309b902a" xlink:to="loc_us-gaap_EarningsPerShareDiluted_01a02127-6a92-7b63-bb6b-d68867afd20b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_01a02127-6a92-7e9d-a998-fac1c38b5db3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_01a02127-6a92-77a2-9cfd-976b309b902a" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_01a02127-6a92-7e9d-a998-fac1c38b5db3" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS" xlink:type="simple" xlink:href="gm-20260930.xsd#CONDENSEDCONSOLIDATEDBALANCESHEETS"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_01a02127-6a92-744c-8eec-f9d742699d81" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_01a02127-6a92-75bb-8f02-a700238a9806" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-744c-8eec-f9d742699d81" xlink:to="loc_us-gaap_StatementTable_01a02127-6a92-75bb-8f02-a700238a9806" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6a92-7318-9595-a37b647de162" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a02127-6a92-75bb-8f02-a700238a9806" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6a92-7318-9595-a37b647de162" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6a92-7318-9595-a37b647de162_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6a92-7318-9595-a37b647de162" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6a92-7318-9595-a37b647de162_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6a92-7488-967a-86a48d679f86" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6a92-7318-9595-a37b647de162" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6a92-7488-967a-86a48d679f86" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_AutomotiveMember_01a02127-6a92-7eaf-99ce-b0240d13a530" xlink:href="gm-20260930.xsd#gm_AutomotiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6a92-7488-967a-86a48d679f86" xlink:to="loc_gm_AutomotiveMember_01a02127-6a92-7eaf-99ce-b0240d13a530" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6a92-70df-ab69-96b44a7c3c1d" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6a92-7488-967a-86a48d679f86" xlink:to="loc_gm_GmFinancialMember_01a02127-6a92-70df-ab69-96b44a7c3c1d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_01a02127-6a92-77ba-8c2c-48c860eaf2a1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-744c-8eec-f9d742699d81" xlink:to="loc_us-gaap_AssetsAbstract_01a02127-6a92-77ba-8c2c-48c860eaf2a1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrentAbstract_01a02127-6a92-7944-8f29-8a6804e62ef8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a02127-6a92-77ba-8c2c-48c860eaf2a1" xlink:to="loc_us-gaap_AssetsCurrentAbstract_01a02127-6a92-7944-8f29-8a6804e62ef8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_01a02127-6a92-7f27-aee4-bb6ca39173b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_01a02127-6a92-7944-8f29-8a6804e62ef8" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_01a02127-6a92-7f27-aee4-bb6ca39173b4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecuritiesCurrent_01a02127-6a92-7dbc-8936-af98928f92aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecuritiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_01a02127-6a92-7944-8f29-8a6804e62ef8" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecuritiesCurrent_01a02127-6a92-7dbc-8936-af98928f92aa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_01a02127-6a92-79e2-a043-0945d356d404" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_01a02127-6a92-7944-8f29-8a6804e62ef8" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_01a02127-6a92-79e2-a043-0945d356d404" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesAndLoansReceivableNetCurrent_01a02127-6a92-7792-811b-e531dbf40e6c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesAndLoansReceivableNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_01a02127-6a92-7944-8f29-8a6804e62ef8" xlink:to="loc_us-gaap_NotesAndLoansReceivableNetCurrent_01a02127-6a92-7792-811b-e531dbf40e6c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_01a02127-6a92-7d6c-bb6b-d53487a240f2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_01a02127-6a92-7944-8f29-8a6804e62ef8" xlink:to="loc_us-gaap_InventoryNet_01a02127-6a92-7d6c-bb6b-d53487a240f2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_01a02127-6a92-7bcb-b25f-0cc661200657" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_01a02127-6a92-7944-8f29-8a6804e62ef8" xlink:to="loc_us-gaap_OtherAssetsCurrent_01a02127-6a92-7bcb-b25f-0cc661200657" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_01a02127-6a92-7448-8c84-c766912b645d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_01a02127-6a92-7944-8f29-8a6804e62ef8" xlink:to="loc_us-gaap_AssetsCurrent_01a02127-6a92-7448-8c84-c766912b645d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsNoncurrentAbstract_01a02127-6a92-72bf-a375-108465999fdb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsNoncurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a02127-6a92-77ba-8c2c-48c860eaf2a1" xlink:to="loc_us-gaap_AssetsNoncurrentAbstract_01a02127-6a92-72bf-a375-108465999fdb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesAndLoansReceivableNetNoncurrent_01a02127-6a92-7d41-b5a4-da4df96d9a6a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesAndLoansReceivableNetNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_01a02127-6a92-72bf-a375-108465999fdb" xlink:to="loc_us-gaap_NotesAndLoansReceivableNetNoncurrent_01a02127-6a92-7d41-b5a4-da4df96d9a6a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_01a02127-6a92-7296-85e7-9f117b29efc4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_01a02127-6a92-72bf-a375-108465999fdb" xlink:to="loc_us-gaap_EquityMethodInvestments_01a02127-6a92-7296-85e7-9f117b29efc4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentExcludingLessorAssetUnderOperatingLeaseAfterAccumulatedDepreciation_01a02127-6a92-7b3d-8d9f-5fe53f59bb28" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentExcludingLessorAssetUnderOperatingLeaseAfterAccumulatedDepreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_01a02127-6a92-72bf-a375-108465999fdb" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentExcludingLessorAssetUnderOperatingLeaseAfterAccumulatedDepreciation_01a02127-6a92-7b3d-8d9f-5fe53f59bb28" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetIncludingGoodwill_01a02127-6a92-7a48-b1b7-2eaf380093e3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntangibleAssetsNetIncludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_01a02127-6a92-72bf-a375-108465999fdb" xlink:to="loc_us-gaap_IntangibleAssetsNetIncludingGoodwill_01a02127-6a92-7a48-b1b7-2eaf380093e3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_OperatingLeaseRightOfUseAssetNoncurrent_01a02127-6a92-780e-992e-23af8bf97021" xlink:href="gm-20260930.xsd#gm_OperatingLeaseRightOfUseAssetNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_01a02127-6a92-72bf-a375-108465999fdb" xlink:to="loc_gm_OperatingLeaseRightOfUseAssetNoncurrent_01a02127-6a92-780e-992e-23af8bf97021" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_01a02127-6a92-7abe-8cb1-a343c49af6e2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_01a02127-6a92-72bf-a375-108465999fdb" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_01a02127-6a92-7abe-8cb1-a343c49af6e2" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_01a02127-6a92-745a-86bb-0965fbdfe0a5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_01a02127-6a92-72bf-a375-108465999fdb" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_01a02127-6a92-745a-86bb-0965fbdfe0a5" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsNoncurrent_01a02127-6a92-76dc-98f4-a65a12435835" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_01a02127-6a92-72bf-a375-108465999fdb" xlink:to="loc_us-gaap_AssetsNoncurrent_01a02127-6a92-76dc-98f4-a65a12435835" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_01a02127-6a92-752b-b943-1507a978f1bd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a02127-6a92-77ba-8c2c-48c860eaf2a1" xlink:to="loc_us-gaap_Assets_01a02127-6a92-752b-b943-1507a978f1bd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_01a02127-6a92-70ae-9a6e-8ef7e5d03512" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-744c-8eec-f9d742699d81" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_01a02127-6a92-70ae-9a6e-8ef7e5d03512" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_01a02127-6a92-7011-bc92-1e6faf62eb41" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_01a02127-6a92-70ae-9a6e-8ef7e5d03512" xlink:to="loc_us-gaap_LiabilitiesCurrentAbstract_01a02127-6a92-7011-bc92-1e6faf62eb41" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_01a02127-6a92-7379-b435-30d36093ae11" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_01a02127-6a92-7011-bc92-1e6faf62eb41" xlink:to="loc_us-gaap_AccountsPayableCurrent_01a02127-6a92-7379-b435-30d36093ae11" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtCurrent_01a02127-6a92-7daa-8020-a6920e2ac6d6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_01a02127-6a92-7011-bc92-1e6faf62eb41" xlink:to="loc_us-gaap_DebtCurrent_01a02127-6a92-7daa-8020-a6920e2ac6d6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_01a02127-6a92-759d-8c36-9369f3722b3b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_01a02127-6a92-7011-bc92-1e6faf62eb41" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_01a02127-6a92-759d-8c36-9369f3722b3b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_01a02127-6a92-7c4c-867e-a1ae41544bb4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_01a02127-6a92-7011-bc92-1e6faf62eb41" xlink:to="loc_us-gaap_LiabilitiesCurrent_01a02127-6a92-7c4c-867e-a1ae41544bb4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrentAbstract_01a02127-6a92-7e4a-b632-253440da3f78" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesNoncurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_01a02127-6a92-70ae-9a6e-8ef7e5d03512" xlink:to="loc_us-gaap_LiabilitiesNoncurrentAbstract_01a02127-6a92-7e4a-b632-253440da3f78" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_01a02127-6a92-788c-a32b-7decedc91d32" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_01a02127-6a92-7e4a-b632-253440da3f78" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_01a02127-6a92-788c-a32b-7decedc91d32" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent_01a02127-6a92-71bd-ad13-84a802df542a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_01a02127-6a92-7e4a-b632-253440da3f78" xlink:to="loc_us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent_01a02127-6a92-71bd-ad13-84a802df542a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent_01a02127-6a92-7b74-97d2-59dff689184a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_01a02127-6a92-7e4a-b632-253440da3f78" xlink:to="loc_us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent_01a02127-6a92-7b74-97d2-59dff689184a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_01a02127-6a92-7e11-9e4f-3934d7c54765" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_01a02127-6a92-7e4a-b632-253440da3f78" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_01a02127-6a92-7e11-9e4f-3934d7c54765" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_01a02127-6a92-7bf5-8aa8-1c4047cf2943" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_01a02127-6a92-7e4a-b632-253440da3f78" xlink:to="loc_us-gaap_LiabilitiesNoncurrent_01a02127-6a92-7bf5-8aa8-1c4047cf2943" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_01a02127-6a92-7d14-a599-eef64ebb47f4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_01a02127-6a92-70ae-9a6e-8ef7e5d03512" xlink:to="loc_us-gaap_Liabilities_01a02127-6a92-7d14-a599-eef64ebb47f4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_01a02127-6a92-74cd-8067-44a229359f11" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_01a02127-6a92-70ae-9a6e-8ef7e5d03512" xlink:to="loc_us-gaap_CommitmentsAndContingencies_01a02127-6a92-74cd-8067-44a229359f11" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityAbstract_01a02127-6a92-7965-b520-3a6551f450d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_01a02127-6a92-70ae-9a6e-8ef7e5d03512" xlink:to="loc_us-gaap_EquityAbstract_01a02127-6a92-7965-b520-3a6551f450d1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_01a02127-6a92-7c42-856e-ff00d0939632" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityAbstract_01a02127-6a92-7965-b520-3a6551f450d1" xlink:to="loc_us-gaap_CommonStockValue_01a02127-6a92-7c42-856e-ff00d0939632" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_01a02127-6a92-7d3e-ae4a-4cd56bc792e2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityAbstract_01a02127-6a92-7965-b520-3a6551f450d1" xlink:to="loc_us-gaap_AdditionalPaidInCapital_01a02127-6a92-7d3e-ae4a-4cd56bc792e2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_01a02127-6a92-7b41-82d8-bc47c920f376" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityAbstract_01a02127-6a92-7965-b520-3a6551f450d1" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_01a02127-6a92-7b41-82d8-bc47c920f376" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_01a02127-6a92-7459-9d94-ef93cd2a594c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityAbstract_01a02127-6a92-7965-b520-3a6551f450d1" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_01a02127-6a92-7459-9d94-ef93cd2a594c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_01a02127-6a92-7af9-a2c4-542986d950fe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityAbstract_01a02127-6a92-7965-b520-3a6551f450d1" xlink:to="loc_us-gaap_StockholdersEquity_01a02127-6a92-7af9-a2c4-542986d950fe" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterest_01a02127-6a92-7a15-9c5d-fcb11908bc76" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MinorityInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityAbstract_01a02127-6a92-7965-b520-3a6551f450d1" xlink:to="loc_us-gaap_MinorityInterest_01a02127-6a92-7a15-9c5d-fcb11908bc76" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a02127-6a92-7568-b78c-08d98a8a4b54" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityAbstract_01a02127-6a92-7965-b520-3a6551f450d1" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a02127-6a92-7568-b78c-08d98a8a4b54" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_01a02127-6a92-75bf-b8f1-15da33307089" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_01a02127-6a92-70ae-9a6e-8ef7e5d03512" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_01a02127-6a92-75bf-b8f1-15da33307089" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical" xlink:type="simple" xlink:href="gm-20260930.xsd#CONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_01a02127-6a92-7016-97aa-dabcc89dc470" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_01a02127-6a92-7b2c-9f18-77b26b2514f4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-7016-97aa-dabcc89dc470" xlink:to="loc_us-gaap_StatementTable_01a02127-6a92-7b2c-9f18-77b26b2514f4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6a92-7343-97c0-ff9dcacaa8f9" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a02127-6a92-7b2c-9f18-77b26b2514f4" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6a92-7343-97c0-ff9dcacaa8f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6a92-7343-97c0-ff9dcacaa8f9_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6a92-7343-97c0-ff9dcacaa8f9" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6a92-7343-97c0-ff9dcacaa8f9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6a92-7f28-8f9d-dafd9ca2ec93" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6a92-7343-97c0-ff9dcacaa8f9" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6a92-7f28-8f9d-dafd9ca2ec93" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_AutomotiveMember_01a02127-6a92-7390-95da-71c6cd4b3e8d" xlink:href="gm-20260930.xsd#gm_AutomotiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6a92-7f28-8f9d-dafd9ca2ec93" xlink:to="loc_gm_AutomotiveMember_01a02127-6a92-7390-95da-71c6cd4b3e8d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6a92-79a1-884a-01993aac83ac" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6a92-7f28-8f9d-dafd9ca2ec93" xlink:to="loc_gm_GmFinancialMember_01a02127-6a92-79a1-884a-01993aac83ac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_01a02127-6a92-76ce-a2f8-72330146e3e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-7016-97aa-dabcc89dc470" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_01a02127-6a92-76ce-a2f8-72330146e3e4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermAccountsNotesAndLoansReceivableNetNoncurrent_01a02127-6a92-7440-b60c-650bd226edf9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermAccountsNotesAndLoansReceivableNetNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-7016-97aa-dabcc89dc470" xlink:to="loc_us-gaap_LongTermAccountsNotesAndLoansReceivableNetNoncurrent_01a02127-6a92-7440-b60c-650bd226edf9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_01a02127-6a92-7dad-8913-f0a9ba7f7bd6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-7016-97aa-dabcc89dc470" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_01a02127-6a92-7dad-8913-f0a9ba7f7bd6" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITY" xlink:type="simple" xlink:href="gm-20260930.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITY"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITY" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_01a02127-6a92-7f4c-98f3-19448eb465c9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_01a02127-6a92-73a5-b7d9-3caf5f786f86" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-7f4c-98f3-19448eb465c9" xlink:to="loc_us-gaap_StatementTable_01a02127-6a92-73a5-b7d9-3caf5f786f86" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_01a02127-6a92-7c25-b60e-c607eff228f0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a02127-6a92-73a5-b7d9-3caf5f786f86" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_01a02127-6a92-7c25-b60e-c607eff228f0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a02127-6a92-7c25-b60e-c607eff228f0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a02127-6a92-7c25-b60e-c607eff228f0" xlink:to="loc_us-gaap_EquityComponentDomain_01a02127-6a92-7c25-b60e-c607eff228f0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a02127-6a92-7e2f-9291-fc9de8267137" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a02127-6a92-7c25-b60e-c607eff228f0" xlink:to="loc_us-gaap_EquityComponentDomain_01a02127-6a92-7e2f-9291-fc9de8267137" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_01a02127-6a92-7572-a945-1e470df0dda5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a02127-6a92-7e2f-9291-fc9de8267137" xlink:to="loc_us-gaap_CommonStockMember_01a02127-6a92-7572-a945-1e470df0dda5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_01a02127-6a92-76e4-a064-b0bdc31abb77" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a02127-6a92-7e2f-9291-fc9de8267137" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_01a02127-6a92-76e4-a064-b0bdc31abb77" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_01a02127-6a92-7423-9540-896af30ba30f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a02127-6a92-7e2f-9291-fc9de8267137" xlink:to="loc_us-gaap_RetainedEarningsMember_01a02127-6a92-7423-9540-896af30ba30f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a02127-6a92-7479-a5a9-915990b727f7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a02127-6a92-7e2f-9291-fc9de8267137" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a02127-6a92-7479-a5a9-915990b727f7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_01a02127-6a92-7891-8b62-83431e7fb76c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a02127-6a92-7e2f-9291-fc9de8267137" xlink:to="loc_us-gaap_NoncontrollingInterestMember_01a02127-6a92-7891-8b62-83431e7fb76c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a02127-6a92-7307-b256-d4831b111d08" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a02127-6a92-7f4c-98f3-19448eb465c9" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a02127-6a92-7307-b256-d4831b111d08" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a02127-6a92-790e-8f6b-b047e7a79713" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a02127-6a92-7307-b256-d4831b111d08" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a02127-6a92-790e-8f6b-b047e7a79713" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_01a02127-6a92-7293-8cea-4bba1c37c76c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a02127-6a92-7307-b256-d4831b111d08" xlink:to="loc_us-gaap_ProfitLoss_01a02127-6a92-7293-8cea-4bba1c37c76c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_01a02127-6a92-733a-a714-7158d49d90c9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a02127-6a92-7307-b256-d4831b111d08" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_01a02127-6a92-733a-a714-7158d49d90c9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRedeemedOrCalledDuringPeriodValue_01a02127-6a92-7770-8cdb-d8a92a76e595" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRedeemedOrCalledDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a02127-6a92-7307-b256-d4831b111d08" xlink:to="loc_us-gaap_StockRedeemedOrCalledDuringPeriodValue_01a02127-6a92-7770-8cdb-d8a92a76e595" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_01a02127-6a92-7348-8600-7517a63e3f3c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a02127-6a92-7307-b256-d4831b111d08" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_01a02127-6a92-7348-8600-7517a63e3f3c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_01a02127-6a92-7e3c-94cf-9211d890f087" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a02127-6a92-7307-b256-d4831b111d08" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_01a02127-6a92-7e3c-94cf-9211d890f087" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStockCash_01a02127-6a92-71e5-8764-0bb81ef6832f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendsCommonStockCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a02127-6a92-7307-b256-d4831b111d08" xlink:to="loc_us-gaap_DividendsCommonStockCash_01a02127-6a92-71e5-8764-0bb81ef6832f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_01a02127-6a92-7eac-9da3-a7f21fb3dedf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a02127-6a92-7307-b256-d4831b111d08" xlink:to="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_01a02127-6a92-7eac-9da3-a7f21fb3dedf" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityOther_01a02127-6a92-7c02-a47b-9ac4b3c0b55c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a02127-6a92-7307-b256-d4831b111d08" xlink:to="loc_us-gaap_StockholdersEquityOther_01a02127-6a92-7c02-a47b-9ac4b3c0b55c" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a02127-6a92-73c4-a873-37e553f3186f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/GMFinancialReceivablesandTransactions" xlink:type="simple" xlink:href="gm-20260930.xsd#GMFinancialReceivablesandTransactions"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/GMFinancialReceivablesandTransactions" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a02127-6b40-7ae7-bbe4-e15e360b5639" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a02127-6b40-77b6-be81-c58a2da042c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a02127-6b40-7ae7-bbe4-e15e360b5639" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a02127-6b40-77b6-be81-c58a2da042c7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6b40-7bd0-b5a5-534aa0ff992e" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a02127-6b40-77b6-be81-c58a2da042c7" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6b40-7bd0-b5a5-534aa0ff992e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7bd0-b5a5-534aa0ff992e_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7bd0-b5a5-534aa0ff992e" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7bd0-b5a5-534aa0ff992e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-72ba-a853-82a62bcd40ee" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7bd0-b5a5-534aa0ff992e" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-72ba-a853-82a62bcd40ee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6b40-76c4-8300-ec3bddc479dc" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-72ba-a853-82a62bcd40ee" xlink:to="loc_gm_GmFinancialMember_01a02127-6b40-76c4-8300-ec3bddc479dc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesTextBlock_01a02127-6b40-7cce-957b-cb05e31ce885" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablesTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a02127-6b40-7ae7-bbe4-e15e360b5639" xlink:to="loc_us-gaap_FinancingReceivablesTextBlock_01a02127-6b40-7cce-957b-cb05e31ce885" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/GMFinancialReceivablesandTransactionsTables" xlink:type="simple" xlink:href="gm-20260930.xsd#GMFinancialReceivablesandTransactionsTables"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/GMFinancialReceivablesandTransactionsTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a02127-6b40-7eb8-8d79-30719ecdb6cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a02127-6b40-7c6a-9ae4-aa65d774fd6c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a02127-6b40-7eb8-8d79-30719ecdb6cf" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a02127-6b40-7c6a-9ae4-aa65d774fd6c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6b40-7316-8244-2d474dea9592" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a02127-6b40-7c6a-9ae4-aa65d774fd6c" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6b40-7316-8244-2d474dea9592" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7316-8244-2d474dea9592_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7316-8244-2d474dea9592" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7316-8244-2d474dea9592_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-714e-b2d8-2b8ebadf7d3c" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7316-8244-2d474dea9592" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-714e-b2d8-2b8ebadf7d3c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6b40-7c27-ba2e-ee79901abffd" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-714e-b2d8-2b8ebadf7d3c" xlink:to="loc_gm_GmFinancialMember_01a02127-6b40-7c27-ba2e-ee79901abffd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-723f-b493-cdeaac24bcaa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a02127-6b40-7c6a-9ae4-aa65d774fd6c" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-723f-b493-cdeaac24bcaa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-723f-b493-cdeaac24bcaa_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-723f-b493-cdeaac24bcaa" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-723f-b493-cdeaac24bcaa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-7bc5-8f73-f8f977a294bf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-723f-b493-cdeaac24bcaa" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-7bc5-8f73-f8f977a294bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerPortfolioSegmentMember_01a02127-6b40-75ae-ac8f-00c824674d01" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConsumerPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-7bc5-8f73-f8f977a294bf" xlink:to="loc_us-gaap_ConsumerPortfolioSegmentMember_01a02127-6b40-75ae-ac8f-00c824674d01" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_01a02127-6b40-74bd-b7de-16969272b2a6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-7bc5-8f73-f8f977a294bf" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_01a02127-6b40-74bd-b7de-16969272b2a6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_01a02127-6b40-7159-a501-810e6ce28414" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a02127-6b40-7eb8-8d79-30719ecdb6cf" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_01a02127-6b40-7159-a501-810e6ce28414" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock_01a02127-6b40-7d69-97d0-b558df88c1eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a02127-6b40-7eb8-8d79-30719ecdb6cf" xlink:to="loc_us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock_01a02127-6b40-7d69-97d0-b558df88c1eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock_01a02127-6b40-7eda-a7db-10ec2f0f08f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a02127-6b40-7eb8-8d79-30719ecdb6cf" xlink:to="loc_us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock_01a02127-6b40-7eda-a7db-10ec2f0f08f3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PastDueFinancingReceivablesTableTextBlock_01a02127-6b40-7d65-ab34-e71f9847c4ef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PastDueFinancingReceivablesTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a02127-6b40-7eb8-8d79-30719ecdb6cf" xlink:to="loc_us-gaap_PastDueFinancingReceivablesTableTextBlock_01a02127-6b40-7d65-ab34-e71f9847c4ef" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_ScheduleofIntercompanyTransactionsTableTextBlock_01a02127-6b40-7f3c-9cb6-9f4a98de32da" xlink:href="gm-20260930.xsd#gm_ScheduleofIntercompanyTransactionsTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a02127-6b40-7eb8-8d79-30719ecdb6cf" xlink:to="loc_gm_ScheduleofIntercompanyTransactionsTableTextBlock_01a02127-6b40-7f3c-9cb6-9f4a98de32da" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/EquipmentonOperatingLeasesTables" xlink:type="simple" xlink:href="gm-20260930.xsd#EquipmentonOperatingLeasesTables"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/EquipmentonOperatingLeasesTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorLeaseDescriptionLineItems_01a02127-6b40-72a6-82b4-fe10c10224af" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LessorLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorLeaseDescriptionTable_01a02127-6b40-7844-87f4-360699b01116" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LessorLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LessorLeaseDescriptionLineItems_01a02127-6b40-72a6-82b4-fe10c10224af" xlink:to="loc_us-gaap_LessorLeaseDescriptionTable_01a02127-6b40-7844-87f4-360699b01116" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6b40-7dbc-b070-5d182a53de90" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LessorLeaseDescriptionTable_01a02127-6b40-7844-87f4-360699b01116" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6b40-7dbc-b070-5d182a53de90" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7dbc-b070-5d182a53de90_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7dbc-b070-5d182a53de90" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7dbc-b070-5d182a53de90_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-76b6-b942-b0a36aac2bbb" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7dbc-b070-5d182a53de90" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-76b6-b942-b0a36aac2bbb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6b40-72da-b8e4-b053ac4f9dc3" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-76b6-b942-b0a36aac2bbb" xlink:to="loc_gm_GmFinancialMember_01a02127-6b40-72da-b8e4-b053ac4f9dc3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_LessorOperatingLeaseCarryingValueOfAssetsSubjectToLeasesTableTextBlock_01a02127-6b40-7d8b-b097-e87bf821b6a5" xlink:href="gm-20260930.xsd#gm_LessorOperatingLeaseCarryingValueOfAssetsSubjectToLeasesTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LessorLeaseDescriptionLineItems_01a02127-6b40-72a6-82b4-fe10c10224af" xlink:to="loc_gm_LessorOperatingLeaseCarryingValueOfAssetsSubjectToLeasesTableTextBlock_01a02127-6b40-7d8b-b097-e87bf821b6a5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedMaturityTableTextBlock_01a02127-6b40-7c13-98aa-a4e364e792da" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedMaturityTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LessorLeaseDescriptionLineItems_01a02127-6b40-72a6-82b4-fe10c10224af" xlink:to="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedMaturityTableTextBlock_01a02127-6b40-7c13-98aa-a4e364e792da" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/VariableInterestEntitiesTables" xlink:type="simple" xlink:href="gm-20260930.xsd#VariableInterestEntitiesTables"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/VariableInterestEntitiesTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityLineItems_01a02127-6b40-7819-bd00-7d098ff04950" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableInterestEntityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_01a02127-6b40-779f-8fe4-16ae0956b7de" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfVariableInterestEntitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_01a02127-6b40-7819-bd00-7d098ff04950" xlink:to="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_01a02127-6b40-779f-8fe4-16ae0956b7de" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6b40-706d-ac6a-589f8eba8583" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_01a02127-6b40-779f-8fe4-16ae0956b7de" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6b40-706d-ac6a-589f8eba8583" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-706d-ac6a-589f8eba8583_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-706d-ac6a-589f8eba8583" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-706d-ac6a-589f8eba8583_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7e9d-ae63-990c77f06a94" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-706d-ac6a-589f8eba8583" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7e9d-ae63-990c77f06a94" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6b40-7adf-aec8-895e8d6ec935" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-7e9d-ae63-990c77f06a94" xlink:to="loc_gm_GmFinancialMember_01a02127-6b40-7adf-aec8-895e8d6ec935" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_01a02127-6b40-77fa-aa34-81918f13fd6a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_01a02127-6b40-779f-8fe4-16ae0956b7de" xlink:to="loc_srt_ConsolidatedEntitiesAxis_01a02127-6b40-77fa-aa34-81918f13fd6a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_01a02127-6b40-77fa-aa34-81918f13fd6a_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_01a02127-6b40-77fa-aa34-81918f13fd6a" xlink:to="loc_srt_ConsolidatedEntitiesDomain_01a02127-6b40-77fa-aa34-81918f13fd6a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_01a02127-6b40-7586-b1da-0d674cdc22bf" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_01a02127-6b40-77fa-aa34-81918f13fd6a" xlink:to="loc_srt_ConsolidatedEntitiesDomain_01a02127-6b40-7586-b1da-0d674cdc22bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_01a02127-6b40-7ab7-93d5-0ff125fca60d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableInterestEntityPrimaryBeneficiaryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_01a02127-6b40-7586-b1da-0d674cdc22bf" xlink:to="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_01a02127-6b40-7ab7-93d5-0ff125fca60d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfVariableInterestEntitiesTextBlock_01a02127-6b40-7475-923b-74e0c51e878b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfVariableInterestEntitiesTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_01a02127-6b40-7819-bd00-7d098ff04950" xlink:to="loc_us-gaap_ScheduleOfVariableInterestEntitiesTextBlock_01a02127-6b40-7475-923b-74e0c51e878b" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/DebtTables" xlink:type="simple" xlink:href="gm-20260930.xsd#DebtTables"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/DebtTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-78df-b5f3-d32042eb4925" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_01a02127-6b40-7d0a-8569-f75620f187c6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-78df-b5f3-d32042eb4925" xlink:to="loc_us-gaap_DebtInstrumentTable_01a02127-6b40-7d0a-8569-f75620f187c6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6b40-7501-9c3c-cb5a08781642" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a02127-6b40-7d0a-8569-f75620f187c6" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6b40-7501-9c3c-cb5a08781642" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7501-9c3c-cb5a08781642_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7501-9c3c-cb5a08781642" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7501-9c3c-cb5a08781642_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-779d-a76f-1cbc3baf7b54" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7501-9c3c-cb5a08781642" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-779d-a76f-1cbc3baf7b54" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_AutomotiveMember_01a02127-6b40-74db-a5f8-f3123ec5e9b6" xlink:href="gm-20260930.xsd#gm_AutomotiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-779d-a76f-1cbc3baf7b54" xlink:to="loc_gm_AutomotiveMember_01a02127-6b40-74db-a5f8-f3123ec5e9b6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6b40-7f9d-a434-0e881db4115a" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-779d-a76f-1cbc3baf7b54" xlink:to="loc_gm_GmFinancialMember_01a02127-6b40-7f9d-a434-0e881db4115a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock_01a02127-6b40-7f9a-9692-30f62a089374" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-78df-b5f3-d32042eb4925" xlink:to="loc_us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock_01a02127-6b40-7f9a-9692-30f62a089374" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/DerivativeFinancialInstrumentsTables" xlink:type="simple" xlink:href="gm-20260930.xsd#DerivativeFinancialInstrumentsTables"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/DerivativeFinancialInstrumentsTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_01a02127-6b40-7647-b638-87a6966ae510" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_01a02127-6b40-7003-a2a7-20ca40c9a9c5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_01a02127-6b40-7647-b638-87a6966ae510" xlink:to="loc_us-gaap_DerivativeTable_01a02127-6b40-7003-a2a7-20ca40c9a9c5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6b40-7aec-8278-b66a3fa9b6ca" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_01a02127-6b40-7003-a2a7-20ca40c9a9c5" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6b40-7aec-8278-b66a3fa9b6ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7aec-8278-b66a3fa9b6ca_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7aec-8278-b66a3fa9b6ca" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7aec-8278-b66a3fa9b6ca_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7f6e-a3ea-be3e88586666" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7aec-8278-b66a3fa9b6ca" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7f6e-a3ea-be3e88586666" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6b40-7f2e-9da9-0abe2d331115" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-7f6e-a3ea-be3e88586666" xlink:to="loc_gm_GmFinancialMember_01a02127-6b40-7f2e-9da9-0abe2d331115" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfNotionalAmountsOfOutstandingDerivativePositionsTableTextBlock_01a02127-6b40-794f-b483-33cfe03801b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfNotionalAmountsOfOutstandingDerivativePositionsTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a02127-6b40-7647-b638-87a6966ae510" xlink:to="loc_us-gaap_ScheduleOfNotionalAmountsOfOutstandingDerivativePositionsTableTextBlock_01a02127-6b40-794f-b483-33cfe03801b6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFairValueHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock_01a02127-6b40-7822-a03f-a3a604f6ec85" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFairValueHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a02127-6b40-7647-b638-87a6966ae510" xlink:to="loc_us-gaap_ScheduleOfFairValueHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock_01a02127-6b40-7822-a03f-a3a604f6ec85" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/RevenueRevenuebyMajorSourceDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#RevenueRevenuebyMajorSourceDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/RevenueRevenuebyMajorSourceDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_01a02127-6a92-71cb-aff2-29049d05286b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_01a02127-6a92-7663-8363-9577fb92d851" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a02127-6a92-71cb-aff2-29049d05286b" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_01a02127-6a92-7663-8363-9577fb92d851" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6a92-7b2f-a1cc-e291ee9370f1" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_01a02127-6a92-7663-8363-9577fb92d851" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6a92-7b2f-a1cc-e291ee9370f1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6a92-7b2f-a1cc-e291ee9370f1_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6a92-7b2f-a1cc-e291ee9370f1" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6a92-7b2f-a1cc-e291ee9370f1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6a92-7d8a-b014-a44141304078" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6a92-7b2f-a1cc-e291ee9370f1" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6a92-7d8a-b014-a44141304078" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_AutomotiveMember_01a02127-6a92-73d9-8820-23976c42d49e" xlink:href="gm-20260930.xsd#gm_AutomotiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6a92-7d8a-b014-a44141304078" xlink:to="loc_gm_AutomotiveMember_01a02127-6a92-73d9-8820-23976c42d49e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_01a02127-6a92-732c-88b0-7cbec794c38f" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_01a02127-6a92-7663-8363-9577fb92d851" xlink:to="loc_srt_ConsolidationItemsAxis_01a02127-6a92-732c-88b0-7cbec794c38f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_01a02127-6a92-732c-88b0-7cbec794c38f_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_01a02127-6a92-732c-88b0-7cbec794c38f" xlink:to="loc_srt_ConsolidationItemsDomain_01a02127-6a92-732c-88b0-7cbec794c38f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_01a02127-6a92-7e9f-8ea0-132f79cb2b73" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_01a02127-6a92-732c-88b0-7cbec794c38f" xlink:to="loc_srt_ConsolidationItemsDomain_01a02127-6a92-7e9f-8ea0-132f79cb2b73" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_01a02127-6a92-78b4-a79f-62c7b5d38409" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_01a02127-6a92-7e9f-8ea0-132f79cb2b73" xlink:to="loc_us-gaap_OperatingSegmentsMember_01a02127-6a92-78b4-a79f-62c7b5d38409" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_01a02127-6a92-76ed-8b17-6dced43eadcd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_01a02127-6a92-7e9f-8ea0-132f79cb2b73" xlink:to="loc_us-gaap_CorporateNonSegmentMember_01a02127-6a92-76ed-8b17-6dced43eadcd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntersegmentEliminationMember_01a02127-6a92-7231-bea5-580897bc047f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntersegmentEliminationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_01a02127-6a92-7e9f-8ea0-132f79cb2b73" xlink:to="loc_us-gaap_IntersegmentEliminationMember_01a02127-6a92-7231-bea5-580897bc047f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_01a02127-6a92-7c2a-b71a-8ed6aaf1e148" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_01a02127-6a92-7663-8363-9577fb92d851" xlink:to="loc_srt_ProductOrServiceAxis_01a02127-6a92-7c2a-b71a-8ed6aaf1e148" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_01a02127-6a92-7c2a-b71a-8ed6aaf1e148_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_01a02127-6a92-7c2a-b71a-8ed6aaf1e148" xlink:to="loc_srt_ProductsAndServicesDomain_01a02127-6a92-7c2a-b71a-8ed6aaf1e148_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_01a02127-6a92-714a-b6c5-94dd37cad1b4" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_01a02127-6a92-7c2a-b71a-8ed6aaf1e148" xlink:to="loc_srt_ProductsAndServicesDomain_01a02127-6a92-714a-b6c5-94dd37cad1b4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_VehiclesandPartsMember_01a02127-6a92-7f1e-b5c6-3d4168e7f498" xlink:href="gm-20260930.xsd#gm_VehiclesandPartsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_01a02127-6a92-714a-b6c5-94dd37cad1b4" xlink:to="loc_gm_VehiclesandPartsMember_01a02127-6a92-7f1e-b5c6-3d4168e7f498" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_UsedVehiclesMember_01a02127-6a92-7df0-8310-0f7a7e03ff83" xlink:href="gm-20260930.xsd#gm_UsedVehiclesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_01a02127-6a92-714a-b6c5-94dd37cad1b4" xlink:to="loc_gm_UsedVehiclesMember_01a02127-6a92-7df0-8310-0f7a7e03ff83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_ServicesandOtherMember_01a02127-6a92-77f6-b7a6-b61c71018488" xlink:href="gm-20260930.xsd#gm_ServicesandOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_01a02127-6a92-714a-b6c5-94dd37cad1b4" xlink:to="loc_gm_ServicesandOtherMember_01a02127-6a92-77f6-b7a6-b61c71018488" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_01a02127-6a92-78fd-a791-585bedb5cc4a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_01a02127-6a92-7663-8363-9577fb92d851" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_01a02127-6a92-78fd-a791-585bedb5cc4a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a02127-6a92-78fd-a791-585bedb5cc4a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a02127-6a92-78fd-a791-585bedb5cc4a" xlink:to="loc_us-gaap_SegmentDomain_01a02127-6a92-78fd-a791-585bedb5cc4a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a02127-6a92-7fdc-9109-e0948ed67f87" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a02127-6a92-78fd-a791-585bedb5cc4a" xlink:to="loc_us-gaap_SegmentDomain_01a02127-6a92-7fdc-9109-e0948ed67f87" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GMNorthAmericaMember_01a02127-6a92-7b80-97cc-1aaf6886cffa" xlink:href="gm-20260930.xsd#gm_GMNorthAmericaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a02127-6a92-7fdc-9109-e0948ed67f87" xlink:to="loc_gm_GMNorthAmericaMember_01a02127-6a92-7b80-97cc-1aaf6886cffa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GMIMember_01a02127-6a92-761a-93df-a1c3cb842828" xlink:href="gm-20260930.xsd#gm_GMIMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a02127-6a92-7fdc-9109-e0948ed67f87" xlink:to="loc_gm_GMIMember_01a02127-6a92-761a-93df-a1c3cb842828" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_CruiseMember_01a02127-6a92-77dd-b1e9-3d6d92672b9e" xlink:href="gm-20260930.xsd#gm_CruiseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a02127-6a92-7fdc-9109-e0948ed67f87" xlink:to="loc_gm_CruiseMember_01a02127-6a92-77dd-b1e9-3d6d92672b9e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GMFinancialSegmentMember_01a02127-6a92-778c-aa7c-01ab626820e4" xlink:href="gm-20260930.xsd#gm_GMFinancialSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a02127-6a92-7fdc-9109-e0948ed67f87" xlink:to="loc_gm_GMFinancialSegmentMember_01a02127-6a92-778c-aa7c-01ab626820e4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a02127-6a92-7974-b51b-c9b6619bd8a3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a02127-6a92-71cb-aff2-29049d05286b" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a02127-6a92-7974-b51b-c9b6619bd8a3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseIncome_01a02127-6a92-78ad-b2b6-693db5afed4d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LeaseIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a02127-6a92-71cb-aff2-29049d05286b" xlink:to="loc_us-gaap_LeaseIncome_01a02127-6a92-78ad-b2b6-693db5afed4d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestAndFeeIncomeLoansConsumer_01a02127-6a92-756a-9efb-32ab61c1e2ac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestAndFeeIncomeLoansConsumer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a02127-6a92-71cb-aff2-29049d05286b" xlink:to="loc_us-gaap_InterestAndFeeIncomeLoansConsumer_01a02127-6a92-756a-9efb-32ab61c1e2ac" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIncome_01a02127-6a92-7b90-8c14-af0b7431b0d5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a02127-6a92-71cb-aff2-29049d05286b" xlink:to="loc_us-gaap_OtherIncome_01a02127-6a92-7b90-8c14-af0b7431b0d5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueNotFromContractWithCustomer_01a02127-6a92-7d95-9742-1edb45ea916d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueNotFromContractWithCustomer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a02127-6a92-71cb-aff2-29049d05286b" xlink:to="loc_us-gaap_RevenueNotFromContractWithCustomer_01a02127-6a92-7d95-9742-1edb45ea916d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_01a02127-6a92-75ac-af83-2df0f7fe6da6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a02127-6a92-71cb-aff2-29049d05286b" xlink:to="loc_us-gaap_Revenues_01a02127-6a92-75ac-af83-2df0f7fe6da6" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/RevenueNarrativeDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#RevenueNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/RevenueNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_01a02127-6a92-7115-8fd1-1447bcef5356" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_01a02127-6a92-77d9-83a1-353ae20ac6fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_01a02127-6a92-7115-8fd1-1447bcef5356" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_01a02127-6a92-77d9-83a1-353ae20ac6fd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_01a02127-6a92-780f-8216-8d41522b1f54" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_01a02127-6a92-77d9-83a1-353ae20ac6fd" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_01a02127-6a92-780f-8216-8d41522b1f54" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_01a02127-6a92-78c0-b4ba-93a37c15a3b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_01a02127-6a92-7115-8fd1-1447bcef5356" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_01a02127-6a92-78c0-b4ba-93a37c15a3b9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_01a02127-6a92-76b8-a493-1e11c818943d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_01a02127-6a92-7115-8fd1-1447bcef5356" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_01a02127-6a92-76b8-a493-1e11c818943d" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/RevenueNarrativeDetails_1" xlink:type="simple" xlink:href="gm-20260930.xsd#RevenueNarrativeDetails_1"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/RevenueNarrativeDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_01a02127-6a92-7115-8fd1-1447bcef5356" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_01a02127-6a92-77d9-83a1-353ae20ac6fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_01a02127-6a92-7115-8fd1-1447bcef5356" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_01a02127-6a92-77d9-83a1-353ae20ac6fd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_01a02127-6a92-78c0-b4ba-93a37c15a3b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_01a02127-6a92-7115-8fd1-1447bcef5356" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_01a02127-6a92-78c0-b4ba-93a37c15a3b9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_01a02127-6a92-76b8-a493-1e11c818943d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_01a02127-6a92-7115-8fd1-1447bcef5356" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_01a02127-6a92-76b8-a493-1e11c818943d" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/MarketableandOtherSecuritiesFairValueofCashEquivalentsandMarketableDebtSecuritiesDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#MarketableandOtherSecuritiesFairValueofCashEquivalentsandMarketableDebtSecuritiesDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/MarketableandOtherSecuritiesFairValueofCashEquivalentsandMarketableDebtSecuritiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SummaryOfInvestmentHoldingsLineItems_01a02127-6a92-737f-8aed-02f0ae1523f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SummaryOfInvestmentHoldingsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_ScheduleOfCashCashEquivalentsAndMarketableSecuritiesTable_01a02127-6a92-76b3-877b-de5dd5970c65" xlink:href="gm-20260930.xsd#gm_ScheduleOfCashCashEquivalentsAndMarketableSecuritiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SummaryOfInvestmentHoldingsLineItems_01a02127-6a92-737f-8aed-02f0ae1523f3" xlink:to="loc_gm_ScheduleOfCashCashEquivalentsAndMarketableSecuritiesTable_01a02127-6a92-76b3-877b-de5dd5970c65" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfFinancialPositionLocationBalanceAxis_01a02127-6a92-7c97-852e-1c9f76fd3e76" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementOfFinancialPositionLocationBalanceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gm_ScheduleOfCashCashEquivalentsAndMarketableSecuritiesTable_01a02127-6a92-76b3-877b-de5dd5970c65" xlink:to="loc_us-gaap_StatementOfFinancialPositionLocationBalanceAxis_01a02127-6a92-7c97-852e-1c9f76fd3e76" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a02127-6a92-7274-8369-e9cec3ae5b6a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gm_ScheduleOfCashCashEquivalentsAndMarketableSecuritiesTable_01a02127-6a92-76b3-877b-de5dd5970c65" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a02127-6a92-7274-8369-e9cec3ae5b6a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6a92-7274-8369-e9cec3ae5b6a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a02127-6a92-7274-8369-e9cec3ae5b6a" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6a92-7274-8369-e9cec3ae5b6a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6a92-7c42-9df3-9976df153547" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a02127-6a92-7274-8369-e9cec3ae5b6a" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6a92-7c42-9df3-9976df153547" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_01a02127-6a92-7935-a433-9574339703e7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6a92-7c42-9df3-9976df153547" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_01a02127-6a92-7935-a433-9574339703e7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_01a02127-6a92-7bb4-97cb-319242d00638" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6a92-7c42-9df3-9976df153547" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_01a02127-6a92-7bb4-97cb-319242d00638" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_01a02127-6a92-7090-b16b-e7d12741131e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gm_ScheduleOfCashCashEquivalentsAndMarketableSecuritiesTable_01a02127-6a92-76b3-877b-de5dd5970c65" xlink:to="loc_us-gaap_FinancialInstrumentAxis_01a02127-6a92-7090-b16b-e7d12741131e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a02127-6a92-7090-b16b-e7d12741131e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a02127-6a92-7090-b16b-e7d12741131e" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a02127-6a92-7090-b16b-e7d12741131e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a02127-6a92-7f55-9a74-a2715b43498e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a02127-6a92-7090-b16b-e7d12741131e" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a02127-6a92-7f55-9a74-a2715b43498e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasuryAndGovernmentMember_01a02127-6a92-7893-9b75-c5c9b17e1ec8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USTreasuryAndGovernmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a02127-6a92-7f55-9a74-a2715b43498e" xlink:to="loc_us-gaap_USTreasuryAndGovernmentMember_01a02127-6a92-7893-9b75-c5c9b17e1ec8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_01a02127-6a92-77d0-975a-3ecc24384d32" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a02127-6a92-7f55-9a74-a2715b43498e" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_01a02127-6a92-77d0-975a-3ecc24384d32" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_01a02127-6a92-7263-9d3a-d5bb18b422c0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a02127-6a92-7f55-9a74-a2715b43498e" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_01a02127-6a92-7263-9d3a-d5bb18b422c0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_01a02127-6a92-78e2-80e7-694dfbd17f11" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignGovernmentDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a02127-6a92-7f55-9a74-a2715b43498e" xlink:to="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_01a02127-6a92-78e2-80e7-694dfbd17f11" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_CorporateDebtAndOtherSecuritiesMember_01a02127-6a92-7709-a4ca-546ea399c6e5" xlink:href="gm-20260930.xsd#gm_CorporateDebtAndOtherSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a02127-6a92-7f55-9a74-a2715b43498e" xlink:to="loc_gm_CorporateDebtAndOtherSecuritiesMember_01a02127-6a92-7709-a4ca-546ea399c6e5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_CashAndTimeDeposits_01a02127-6a92-7dab-a2f8-5b840e0c78df" xlink:href="gm-20260930.xsd#gm_CashAndTimeDeposits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SummaryOfInvestmentHoldingsLineItems_01a02127-6a92-737f-8aed-02f0ae1523f3" xlink:to="loc_gm_CashAndTimeDeposits_01a02127-6a92-7dab-a2f8-5b840e0c78df" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_01a02127-6a92-7473-8541-c10ea2817776" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SummaryOfInvestmentHoldingsLineItems_01a02127-6a92-737f-8aed-02f0ae1523f3" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_01a02127-6a92-7473-8541-c10ea2817776" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsAtCarryingValue_01a02127-6a92-795c-8b34-b53320399b37" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MoneyMarketFundsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SummaryOfInvestmentHoldingsLineItems_01a02127-6a92-737f-8aed-02f0ae1523f3" xlink:to="loc_us-gaap_MoneyMarketFundsAtCarryingValue_01a02127-6a92-795c-8b34-b53320399b37" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_01a02127-6a92-70bb-beb6-a4c007dbdb93" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SummaryOfInvestmentHoldingsLineItems_01a02127-6a92-737f-8aed-02f0ae1523f3" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_01a02127-6a92-70bb-beb6-a4c007dbdb93" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalents_01a02127-6a92-7731-8897-89494070a2d4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SummaryOfInvestmentHoldingsLineItems_01a02127-6a92-737f-8aed-02f0ae1523f3" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalents_01a02127-6a92-7731-8897-89494070a2d4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_RestrictedCashAndMoneyMarketFunds_01a02127-6a92-7341-9fe9-d2eb8e84e61e" xlink:href="gm-20260930.xsd#gm_RestrictedCashAndMoneyMarketFunds"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SummaryOfInvestmentHoldingsLineItems_01a02127-6a92-737f-8aed-02f0ae1523f3" xlink:to="loc_gm_RestrictedCashAndMoneyMarketFunds_01a02127-6a92-7341-9fe9-d2eb8e84e61e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_01a02127-6a92-73cd-ba0a-be192e05942d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SummaryOfInvestmentHoldingsLineItems_01a02127-6a92-737f-8aed-02f0ae1523f3" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_01a02127-6a92-73cd-ba0a-be192e05942d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_01a02127-6a92-7ad6-a533-ed65a71c7c8c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SummaryOfInvestmentHoldingsLineItems_01a02127-6a92-737f-8aed-02f0ae1523f3" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_01a02127-6a92-7ad6-a533-ed65a71c7c8c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_01a02127-6a92-7862-891c-3b2da5c5738c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/MarketableandOtherSecuritiesFairValueofCashEquivalentsandMarketableDebtSecuritiesDetails_1" xlink:type="simple" xlink:href="gm-20260930.xsd#MarketableandOtherSecuritiesFairValueofCashEquivalentsandMarketableDebtSecuritiesDetails_1"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/MarketableandOtherSecuritiesFairValueofCashEquivalentsandMarketableDebtSecuritiesDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SummaryOfInvestmentHoldingsLineItems_01a02127-6a92-737f-8aed-02f0ae1523f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SummaryOfInvestmentHoldingsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_ScheduleOfCashCashEquivalentsAndMarketableSecuritiesTable_01a02127-6a92-76b3-877b-de5dd5970c65" xlink:href="gm-20260930.xsd#gm_ScheduleOfCashCashEquivalentsAndMarketableSecuritiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SummaryOfInvestmentHoldingsLineItems_01a02127-6a92-737f-8aed-02f0ae1523f3" xlink:to="loc_gm_ScheduleOfCashCashEquivalentsAndMarketableSecuritiesTable_01a02127-6a92-76b3-877b-de5dd5970c65" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a02127-6a92-7274-8369-e9cec3ae5b6a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gm_ScheduleOfCashCashEquivalentsAndMarketableSecuritiesTable_01a02127-6a92-76b3-877b-de5dd5970c65" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a02127-6a92-7274-8369-e9cec3ae5b6a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6a92-7274-8369-e9cec3ae5b6a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a02127-6a92-7274-8369-e9cec3ae5b6a" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6a92-7274-8369-e9cec3ae5b6a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6a92-7c42-9df3-9976df153547" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a02127-6a92-7274-8369-e9cec3ae5b6a" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6a92-7c42-9df3-9976df153547" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_01a02127-6a92-7935-a433-9574339703e7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6a92-7c42-9df3-9976df153547" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_01a02127-6a92-7935-a433-9574339703e7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_01a02127-6a92-7bb4-97cb-319242d00638" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6a92-7c42-9df3-9976df153547" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_01a02127-6a92-7bb4-97cb-319242d00638" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_01a02127-6a92-7090-b16b-e7d12741131e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gm_ScheduleOfCashCashEquivalentsAndMarketableSecuritiesTable_01a02127-6a92-76b3-877b-de5dd5970c65" xlink:to="loc_us-gaap_FinancialInstrumentAxis_01a02127-6a92-7090-b16b-e7d12741131e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a02127-6a92-7090-b16b-e7d12741131e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a02127-6a92-7090-b16b-e7d12741131e" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a02127-6a92-7090-b16b-e7d12741131e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a02127-6a92-7f55-9a74-a2715b43498e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a02127-6a92-7090-b16b-e7d12741131e" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a02127-6a92-7f55-9a74-a2715b43498e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasuryAndGovernmentMember_01a02127-6a92-7893-9b75-c5c9b17e1ec8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USTreasuryAndGovernmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a02127-6a92-7f55-9a74-a2715b43498e" xlink:to="loc_us-gaap_USTreasuryAndGovernmentMember_01a02127-6a92-7893-9b75-c5c9b17e1ec8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_01a02127-6a92-77d0-975a-3ecc24384d32" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a02127-6a92-7f55-9a74-a2715b43498e" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_01a02127-6a92-77d0-975a-3ecc24384d32" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_01a02127-6a92-7263-9d3a-d5bb18b422c0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a02127-6a92-7f55-9a74-a2715b43498e" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_01a02127-6a92-7263-9d3a-d5bb18b422c0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_01a02127-6a92-78e2-80e7-694dfbd17f11" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignGovernmentDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a02127-6a92-7f55-9a74-a2715b43498e" xlink:to="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_01a02127-6a92-78e2-80e7-694dfbd17f11" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_CorporateDebtAndOtherSecuritiesMember_01a02127-6a92-7709-a4ca-546ea399c6e5" xlink:href="gm-20260930.xsd#gm_CorporateDebtAndOtherSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a02127-6a92-7f55-9a74-a2715b43498e" xlink:to="loc_gm_CorporateDebtAndOtherSecuritiesMember_01a02127-6a92-7709-a4ca-546ea399c6e5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_CashAndTimeDeposits_01a02127-6a92-7dab-a2f8-5b840e0c78df" xlink:href="gm-20260930.xsd#gm_CashAndTimeDeposits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SummaryOfInvestmentHoldingsLineItems_01a02127-6a92-737f-8aed-02f0ae1523f3" xlink:to="loc_gm_CashAndTimeDeposits_01a02127-6a92-7dab-a2f8-5b840e0c78df" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_01a02127-6a92-7473-8541-c10ea2817776" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SummaryOfInvestmentHoldingsLineItems_01a02127-6a92-737f-8aed-02f0ae1523f3" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_01a02127-6a92-7473-8541-c10ea2817776" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsAtCarryingValue_01a02127-6a92-795c-8b34-b53320399b37" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MoneyMarketFundsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SummaryOfInvestmentHoldingsLineItems_01a02127-6a92-737f-8aed-02f0ae1523f3" xlink:to="loc_us-gaap_MoneyMarketFundsAtCarryingValue_01a02127-6a92-795c-8b34-b53320399b37" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_01a02127-6a92-70bb-beb6-a4c007dbdb93" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SummaryOfInvestmentHoldingsLineItems_01a02127-6a92-737f-8aed-02f0ae1523f3" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_01a02127-6a92-70bb-beb6-a4c007dbdb93" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalents_01a02127-6a92-7731-8897-89494070a2d4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SummaryOfInvestmentHoldingsLineItems_01a02127-6a92-737f-8aed-02f0ae1523f3" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalents_01a02127-6a92-7731-8897-89494070a2d4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_RestrictedCashAndMoneyMarketFunds_01a02127-6a92-7341-9fe9-d2eb8e84e61e" xlink:href="gm-20260930.xsd#gm_RestrictedCashAndMoneyMarketFunds"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SummaryOfInvestmentHoldingsLineItems_01a02127-6a92-737f-8aed-02f0ae1523f3" xlink:to="loc_gm_RestrictedCashAndMoneyMarketFunds_01a02127-6a92-7341-9fe9-d2eb8e84e61e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_01a02127-6a92-73cd-ba0a-be192e05942d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SummaryOfInvestmentHoldingsLineItems_01a02127-6a92-737f-8aed-02f0ae1523f3" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_01a02127-6a92-73cd-ba0a-be192e05942d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_01a02127-6a92-7ad6-a533-ed65a71c7c8c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SummaryOfInvestmentHoldingsLineItems_01a02127-6a92-737f-8aed-02f0ae1523f3" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_01a02127-6a92-7ad6-a533-ed65a71c7c8c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_01a02127-6a92-7862-891c-3b2da5c5738c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/GMFinancialReceivablesandTransactionsFinanceReceivablesDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#GMFinancialReceivablesandTransactionsFinanceReceivablesDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/GMFinancialReceivablesandTransactionsFinanceReceivablesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a02127-6b40-731f-aeb6-1ca2bb909a74" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a02127-6b40-7328-8082-9dc313f0f68a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a02127-6b40-731f-aeb6-1ca2bb909a74" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a02127-6b40-7328-8082-9dc313f0f68a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6b40-746c-b7fc-13f74e971c47" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a02127-6b40-7328-8082-9dc313f0f68a" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6b40-746c-b7fc-13f74e971c47" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-746c-b7fc-13f74e971c47_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-746c-b7fc-13f74e971c47" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-746c-b7fc-13f74e971c47_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-782f-9b77-e59c29eef882" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-746c-b7fc-13f74e971c47" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-782f-9b77-e59c29eef882" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6b40-77b3-904d-48486641a79e" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-782f-9b77-e59c29eef882" xlink:to="loc_gm_GmFinancialMember_01a02127-6b40-77b3-904d-48486641a79e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-7bff-b453-d1359ee9c37f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a02127-6b40-7328-8082-9dc313f0f68a" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-7bff-b453-d1359ee9c37f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-7bff-b453-d1359ee9c37f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-7bff-b453-d1359ee9c37f" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-7bff-b453-d1359ee9c37f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-7b6e-aaba-df0689be3264" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-7bff-b453-d1359ee9c37f" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-7b6e-aaba-df0689be3264" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerPortfolioSegmentMember_01a02127-6b40-7a52-a17b-b488f20ae5c6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConsumerPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-7b6e-aaba-df0689be3264" xlink:to="loc_us-gaap_ConsumerPortfolioSegmentMember_01a02127-6b40-7a52-a17b-b488f20ae5c6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_01a02127-6b40-7494-b471-35e5faa511fe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-7b6e-aaba-df0689be3264" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_01a02127-6b40-7494-b471-35e5faa511fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a02127-6b40-72ef-b6be-78faf9d17e88" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a02127-6b40-7328-8082-9dc313f0f68a" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a02127-6b40-72ef-b6be-78faf9d17e88" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6b40-72ef-b6be-78faf9d17e88_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a02127-6b40-72ef-b6be-78faf9d17e88" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6b40-72ef-b6be-78faf9d17e88_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6b40-7e8e-ac7c-c3f40a0c88a2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a02127-6b40-72ef-b6be-78faf9d17e88" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6b40-7e8e-ac7c-c3f40a0c88a2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_01a02127-6b40-7aac-ad71-7b61730cba6d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6b40-7e8e-ac7c-c3f40a0c88a2" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_01a02127-6b40-7aac-ad71-7b61730cba6d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_01a02127-6b40-77ca-bfbf-66d2f0d56ae8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6b40-7e8e-ac7c-c3f40a0c88a2" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_01a02127-6b40-77ca-bfbf-66d2f0d56ae8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a02127-6b40-7094-8aba-c3edf53e5798" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a02127-6b40-7328-8082-9dc313f0f68a" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a02127-6b40-7094-8aba-c3edf53e5798" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a02127-6b40-7094-8aba-c3edf53e5798_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a02127-6b40-7094-8aba-c3edf53e5798" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a02127-6b40-7094-8aba-c3edf53e5798_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a02127-6b40-7cc9-8156-c446bad20b95" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a02127-6b40-7094-8aba-c3edf53e5798" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a02127-6b40-7cc9-8156-c446bad20b95" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_DealerFinancingMember_01a02127-6b40-7874-b672-dd8b40650e98" xlink:href="gm-20260930.xsd#gm_DealerFinancingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a02127-6b40-7cc9-8156-c446bad20b95" xlink:to="loc_gm_DealerFinancingMember_01a02127-6b40-7874-b672-dd8b40650e98" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_OtherFinancingMember_01a02127-6b40-7222-8d9c-739e33953238" xlink:href="gm-20260930.xsd#gm_OtherFinancingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a02127-6b40-7cc9-8156-c446bad20b95" xlink:to="loc_gm_OtherFinancingMember_01a02127-6b40-7222-8d9c-739e33953238" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableGross_01a02127-6b40-7592-8b3e-58d1b935854a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesReceivableGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a02127-6b40-731f-aeb6-1ca2bb909a74" xlink:to="loc_us-gaap_NotesReceivableGross_01a02127-6b40-7592-8b3e-58d1b935854a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_01a02127-6b40-74b6-bc5c-cdc553fea5d6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a02127-6b40-731f-aeb6-1ca2bb909a74" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_01a02127-6b40-74b6-bc5c-cdc553fea5d6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableNet_01a02127-6b40-798a-8694-25e3528b641a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a02127-6b40-731f-aeb6-1ca2bb909a74" xlink:to="loc_us-gaap_NotesReceivableNet_01a02127-6b40-798a-8694-25e3528b641a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivablesFairValueDisclosure_01a02127-6b40-7ddc-a937-70995dd49d22" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReceivablesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a02127-6b40-731f-aeb6-1ca2bb909a74" xlink:to="loc_us-gaap_ReceivablesFairValueDisclosure_01a02127-6b40-7ddc-a937-70995dd49d22" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_DealerCashManagement_01a02127-6b40-7531-a151-36afdbb60007" xlink:href="gm-20260930.xsd#gm_DealerCashManagement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a02127-6b40-731f-aeb6-1ca2bb909a74" xlink:to="loc_gm_DealerCashManagement_01a02127-6b40-7531-a151-36afdbb60007" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/GMFinancialReceivablesandTransactionsAllowanceforLoanLossesDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#GMFinancialReceivablesandTransactionsAllowanceforLoanLossesDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/GMFinancialReceivablesandTransactionsAllowanceforLoanLossesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_01a02127-6b40-741c-9669-7b7718b2465a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_01a02127-6b40-7e5b-a289-7d54c3b5e01c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_01a02127-6b40-741c-9669-7b7718b2465a" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_01a02127-6b40-7e5b-a289-7d54c3b5e01c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6b40-7757-99a7-f5a41263d51f" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_01a02127-6b40-7e5b-a289-7d54c3b5e01c" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6b40-7757-99a7-f5a41263d51f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7757-99a7-f5a41263d51f_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7757-99a7-f5a41263d51f" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7757-99a7-f5a41263d51f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7d48-8806-5c2b197d5f8d" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7757-99a7-f5a41263d51f" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7d48-8806-5c2b197d5f8d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6b40-7e5b-8922-d5bc2178595b" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-7d48-8806-5c2b197d5f8d" xlink:to="loc_gm_GmFinancialMember_01a02127-6b40-7e5b-8922-d5bc2178595b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_01a02127-6b40-7f08-aece-3fb46aebc78f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_01a02127-6b40-741c-9669-7b7718b2465a" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_01a02127-6b40-7f08-aece-3fb46aebc78f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_01a02127-6b40-7b10-861a-362306971249" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_01a02127-6b40-7f08-aece-3fb46aebc78f" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_01a02127-6b40-7b10-861a-362306971249" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForLoanLeaseAndOtherLosses_01a02127-6b40-7ea6-aa00-51bdbcbad924" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProvisionForLoanLeaseAndOtherLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_01a02127-6b40-7f08-aece-3fb46aebc78f" xlink:to="loc_us-gaap_ProvisionForLoanLeaseAndOtherLosses_01a02127-6b40-7ea6-aa00-51bdbcbad924" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_01a02127-6b40-7c86-b663-e37285ac8822" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_01a02127-6b40-7f08-aece-3fb46aebc78f" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_01a02127-6b40-7c86-b663-e37285ac8822" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery_01a02127-6b40-737d-bdb3-e14c9b10f248" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_01a02127-6b40-7f08-aece-3fb46aebc78f" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery_01a02127-6b40-737d-bdb3-e14c9b10f248" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossForeignCurrencyTranslation_01a02127-6b40-7ee0-bff9-c2e499170767" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossForeignCurrencyTranslation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_01a02127-6b40-7f08-aece-3fb46aebc78f" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossForeignCurrencyTranslation_01a02127-6b40-7ee0-bff9-c2e499170767" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_01a02127-6b40-7590-8d0c-13a1ff6396ef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLosses"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_FinancingReceivableAllowanceForCreditLossToNonaccrualPercent_01a02127-6b40-73fd-9ec1-ab9a6a5292f5" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_FinancingReceivableAllowanceForCreditLossToNonaccrualPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_01a02127-6b40-741c-9669-7b7718b2465a" xlink:to="loc_srt_FinancingReceivableAllowanceForCreditLossToNonaccrualPercent_01a02127-6b40-73fd-9ec1-ab9a6a5292f5" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/GMFinancialReceivablesandTransactionsCreditRiskProfilebyFICOScoreDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#GMFinancialReceivablesandTransactionsCreditRiskProfilebyFICOScoreDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/GMFinancialReceivablesandTransactionsCreditRiskProfilebyFICOScoreDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-75a9-810c-dd5d3e23cc49" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_01a02127-6b40-7a7e-b1f5-d90afbeda4e5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-75a9-810c-dd5d3e23cc49" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_01a02127-6b40-7a7e-b1f5-d90afbeda4e5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6b40-7302-b0b1-9f9ea953604b" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_01a02127-6b40-7a7e-b1f5-d90afbeda4e5" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6b40-7302-b0b1-9f9ea953604b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7302-b0b1-9f9ea953604b_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7302-b0b1-9f9ea953604b" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7302-b0b1-9f9ea953604b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7c4c-a4e3-b4d7818d836f" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7302-b0b1-9f9ea953604b" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7c4c-a4e3-b4d7818d836f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6b40-73e7-beb1-5aa20e3b7412" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-7c4c-a4e3-b4d7818d836f" xlink:to="loc_gm_GmFinancialMember_01a02127-6b40-73e7-beb1-5aa20e3b7412" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditScoreFicoAxis_01a02127-6b40-73de-bcf5-bee69fba6f4e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditScoreFicoAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_01a02127-6b40-7a7e-b1f5-d90afbeda4e5" xlink:to="loc_us-gaap_CreditScoreFicoAxis_01a02127-6b40-73de-bcf5-bee69fba6f4e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditScoreFicoDomain_01a02127-6b40-73de-bcf5-bee69fba6f4e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditScoreFicoDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditScoreFicoAxis_01a02127-6b40-73de-bcf5-bee69fba6f4e" xlink:to="loc_us-gaap_CreditScoreFicoDomain_01a02127-6b40-73de-bcf5-bee69fba6f4e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditScoreFicoDomain_01a02127-6b40-7824-8f70-0d712f5a468f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditScoreFicoDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditScoreFicoAxis_01a02127-6b40-73de-bcf5-bee69fba6f4e" xlink:to="loc_us-gaap_CreditScoreFicoDomain_01a02127-6b40-7824-8f70-0d712f5a468f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_FICOScoreGreaterThan680Member_01a02127-6b40-7b89-97cb-50bdc3784200" xlink:href="gm-20260930.xsd#gm_FICOScoreGreaterThan680Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditScoreFicoDomain_01a02127-6b40-7824-8f70-0d712f5a468f" xlink:to="loc_gm_FICOScoreGreaterThan680Member_01a02127-6b40-7b89-97cb-50bdc3784200" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_FICOScore620To679Member_01a02127-6b40-708d-b3eb-f5cd144baee8" xlink:href="gm-20260930.xsd#gm_FICOScore620To679Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditScoreFicoDomain_01a02127-6b40-7824-8f70-0d712f5a468f" xlink:to="loc_gm_FICOScore620To679Member_01a02127-6b40-708d-b3eb-f5cd144baee8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_FICOScoreLessThan620Member_01a02127-6b40-70d2-a1cc-ee575a335e5f" xlink:href="gm-20260930.xsd#gm_FICOScoreLessThan620Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditScoreFicoDomain_01a02127-6b40-7824-8f70-0d712f5a468f" xlink:to="loc_gm_FICOScoreLessThan620Member_01a02127-6b40-70d2-a1cc-ee575a335e5f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-74ac-b982-c0e75823344d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_01a02127-6b40-7a7e-b1f5-d90afbeda4e5" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-74ac-b982-c0e75823344d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-74ac-b982-c0e75823344d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-74ac-b982-c0e75823344d" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-74ac-b982-c0e75823344d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-7c3b-b8ee-58c96176c2e8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-74ac-b982-c0e75823344d" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-7c3b-b8ee-58c96176c2e8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerPortfolioSegmentMember_01a02127-6b40-7256-a452-2d9da97e2c44" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConsumerPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-7c3b-b8ee-58c96176c2e8" xlink:to="loc_us-gaap_ConsumerPortfolioSegmentMember_01a02127-6b40-7256-a452-2d9da97e2c44" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_01a02127-6b40-797a-bd98-b052ff203b23" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-75a9-810c-dd5d3e23cc49" xlink:to="loc_us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_01a02127-6b40-797a-bd98-b052ff203b23" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_01a02127-6b40-789a-968b-5c8e1752c7c3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-75a9-810c-dd5d3e23cc49" xlink:to="loc_us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_01a02127-6b40-789a-968b-5c8e1752c7c3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear_01a02127-6b40-72e2-80d9-47809b549dfe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-75a9-810c-dd5d3e23cc49" xlink:to="loc_us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear_01a02127-6b40-72e2-80d9-47809b549dfe" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_01a02127-6b40-7fd3-ad8b-5880eabe1472" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-75a9-810c-dd5d3e23cc49" xlink:to="loc_us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_01a02127-6b40-7fd3-ad8b-5880eabe1472" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_01a02127-6b40-7a64-bcb2-988dfada4646" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-75a9-810c-dd5d3e23cc49" xlink:to="loc_us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_01a02127-6b40-7a64-bcb2-988dfada4646" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_01a02127-6b40-7842-8b7b-e4ae48d320d9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-75a9-810c-dd5d3e23cc49" xlink:to="loc_us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_01a02127-6b40-7842-8b7b-e4ae48d320d9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableGross_01a02127-6b40-7d83-b461-ecbec7006712" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesReceivableGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-75a9-810c-dd5d3e23cc49" xlink:to="loc_us-gaap_NotesReceivableGross_01a02127-6b40-7d83-b461-ecbec7006712" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_FinancingReceivableBeforeAllowanceForCreditLossPercent_01a02127-6b40-7771-b28c-c660807179ac" xlink:href="gm-20260930.xsd#gm_FinancingReceivableBeforeAllowanceForCreditLossPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-75a9-810c-dd5d3e23cc49" xlink:to="loc_gm_FinancingReceivableBeforeAllowanceForCreditLossPercent_01a02127-6b40-7771-b28c-c660807179ac" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/GMFinancialReceivablesandTransactionsRetailFinanceReceivablesDelinquenciesDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#GMFinancialReceivablesandTransactionsRetailFinanceReceivablesDelinquenciesDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/GMFinancialReceivablesandTransactionsRetailFinanceReceivablesDelinquenciesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_01a02127-6b40-7400-adbd-5d7f1203798f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_01a02127-6b40-7140-b920-bac383d662ce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFinancingReceivablesPastDueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_01a02127-6b40-7400-adbd-5d7f1203798f" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_01a02127-6b40-7140-b920-bac383d662ce" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6b40-71f1-8446-2c740fb11a82" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_01a02127-6b40-7140-b920-bac383d662ce" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6b40-71f1-8446-2c740fb11a82" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-71f1-8446-2c740fb11a82_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-71f1-8446-2c740fb11a82" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-71f1-8446-2c740fb11a82_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-732d-b10e-c4866823d46a" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-71f1-8446-2c740fb11a82" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-732d-b10e-c4866823d46a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6b40-7d8e-b738-d899e02ed892" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-732d-b10e-c4866823d46a" xlink:to="loc_gm_GmFinancialMember_01a02127-6b40-7d8e-b738-d899e02ed892" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-775c-adec-ce26e68ab3f4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_01a02127-6b40-7140-b920-bac383d662ce" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-775c-adec-ce26e68ab3f4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-775c-adec-ce26e68ab3f4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-775c-adec-ce26e68ab3f4" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-775c-adec-ce26e68ab3f4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-7937-ab54-5cf6d76ca70a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-775c-adec-ce26e68ab3f4" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-7937-ab54-5cf6d76ca70a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerPortfolioSegmentMember_01a02127-6b40-7c85-9063-a1c35938acb5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConsumerPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-7937-ab54-5cf6d76ca70a" xlink:to="loc_us-gaap_ConsumerPortfolioSegmentMember_01a02127-6b40-7c85-9063-a1c35938acb5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentPerformanceStatusAxis_01a02127-6b40-74b6-8ebb-a0efffdc76d9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentPerformanceStatusAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_01a02127-6b40-7140-b920-bac383d662ce" xlink:to="loc_us-gaap_FinancialInstrumentPerformanceStatusAxis_01a02127-6b40-74b6-8ebb-a0efffdc76d9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentPerformanceStatusDomain_01a02127-6b40-74b6-8ebb-a0efffdc76d9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentPerformanceStatusDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentPerformanceStatusAxis_01a02127-6b40-74b6-8ebb-a0efffdc76d9" xlink:to="loc_us-gaap_FinancialInstrumentPerformanceStatusDomain_01a02127-6b40-74b6-8ebb-a0efffdc76d9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentPerformanceStatusDomain_01a02127-6b40-7cec-971e-ad70644ed1c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentPerformanceStatusDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentPerformanceStatusAxis_01a02127-6b40-74b6-8ebb-a0efffdc76d9" xlink:to="loc_us-gaap_FinancialInstrumentPerformanceStatusDomain_01a02127-6b40-7cec-971e-ad70644ed1c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformingFinancingReceivableMember_01a02127-6b40-72ae-92fc-f83aac0c70e7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PerformingFinancingReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentPerformanceStatusDomain_01a02127-6b40-7cec-971e-ad70644ed1c7" xlink:to="loc_us-gaap_PerformingFinancingReceivableMember_01a02127-6b40-72ae-92fc-f83aac0c70e7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonperformingFinancingReceivableMember_01a02127-6b40-7ce0-98d2-84f35d1e2d19" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonperformingFinancingReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentPerformanceStatusDomain_01a02127-6b40-7cec-971e-ad70644ed1c7" xlink:to="loc_us-gaap_NonperformingFinancingReceivableMember_01a02127-6b40-7ce0-98d2-84f35d1e2d19" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_01a02127-6b40-7fa1-a0d1-ef8d1db9b1fe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablesPeriodPastDueAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_01a02127-6b40-7140-b920-bac383d662ce" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_01a02127-6b40-7fa1-a0d1-ef8d1db9b1fe" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a02127-6b40-7fa1-a0d1-ef8d1db9b1fe_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablesPeriodPastDueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_01a02127-6b40-7fa1-a0d1-ef8d1db9b1fe" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a02127-6b40-7fa1-a0d1-ef8d1db9b1fe_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a02127-6b40-7b5e-adbe-441b4ddaf4be" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablesPeriodPastDueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_01a02127-6b40-7fa1-a0d1-ef8d1db9b1fe" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a02127-6b40-7b5e-adbe-441b4ddaf4be" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_NotPastDueMember_01a02127-6b40-7b80-bb4e-123d5cc16196" xlink:href="gm-20260930.xsd#gm_NotPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a02127-6b40-7b5e-adbe-441b4ddaf4be" xlink:to="loc_gm_NotPastDueMember_01a02127-6b40-7b80-bb4e-123d5cc16196" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_FinancingReceivables31To60DaysPastDueMember_01a02127-6b40-7645-8e68-659a73c2675c" xlink:href="gm-20260930.xsd#gm_FinancingReceivables31To60DaysPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a02127-6b40-7b5e-adbe-441b4ddaf4be" xlink:to="loc_gm_FinancingReceivables31To60DaysPastDueMember_01a02127-6b40-7645-8e68-659a73c2675c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_FinancingReceivablesGreaterThan60DaysPastDueMember_01a02127-6b40-7b57-acce-de984fefd51c" xlink:href="gm-20260930.xsd#gm_FinancingReceivablesGreaterThan60DaysPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a02127-6b40-7b5e-adbe-441b4ddaf4be" xlink:to="loc_gm_FinancingReceivablesGreaterThan60DaysPastDueMember_01a02127-6b40-7b57-acce-de984fefd51c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_FinancingReceivablesGreaterThan30DaysPastDueMember_01a02127-6b40-71b9-bab8-4d4ef405e6b7" xlink:href="gm-20260930.xsd#gm_FinancingReceivablesGreaterThan30DaysPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a02127-6b40-7b5e-adbe-441b4ddaf4be" xlink:to="loc_gm_FinancingReceivablesGreaterThan30DaysPastDueMember_01a02127-6b40-71b9-bab8-4d4ef405e6b7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_FinancingReceivablesInRepossessionMember_01a02127-6b40-7b1c-92e6-b90b81d33ebb" xlink:href="gm-20260930.xsd#gm_FinancingReceivablesInRepossessionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a02127-6b40-7b5e-adbe-441b4ddaf4be" xlink:to="loc_gm_FinancingReceivablesInRepossessionMember_01a02127-6b40-7b1c-92e6-b90b81d33ebb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_FinanceReceivablesMoreThan30DaysDelinquentOrInRepossessionMember_01a02127-6b40-7525-b56c-a3bd8bb500b3" xlink:href="gm-20260930.xsd#gm_FinanceReceivablesMoreThan30DaysDelinquentOrInRepossessionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a02127-6b40-7b5e-adbe-441b4ddaf4be" xlink:to="loc_gm_FinanceReceivablesMoreThan30DaysDelinquentOrInRepossessionMember_01a02127-6b40-7525-b56c-a3bd8bb500b3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_01a02127-6b40-76a2-af95-780aa8f19c86" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_01a02127-6b40-7400-adbd-5d7f1203798f" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_01a02127-6b40-76a2-af95-780aa8f19c86" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAbstract_01a02127-6b40-7500-b9e9-318dcf20c8a4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_01a02127-6b40-7400-adbd-5d7f1203798f" xlink:to="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAbstract_01a02127-6b40-7500-b9e9-318dcf20c8a4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_01a02127-6b40-7d4e-96e7-db45146a85df" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAbstract_01a02127-6b40-7500-b9e9-318dcf20c8a4" xlink:to="loc_us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_01a02127-6b40-7d4e-96e7-db45146a85df" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_01a02127-6b40-7794-962c-36f72c8a184e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAbstract_01a02127-6b40-7500-b9e9-318dcf20c8a4" xlink:to="loc_us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_01a02127-6b40-7794-962c-36f72c8a184e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear_01a02127-6b40-7084-a8b0-7ebb3f8fdde1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAbstract_01a02127-6b40-7500-b9e9-318dcf20c8a4" xlink:to="loc_us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear_01a02127-6b40-7084-a8b0-7ebb3f8fdde1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_01a02127-6b40-7531-aa60-3b4029e83913" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAbstract_01a02127-6b40-7500-b9e9-318dcf20c8a4" xlink:to="loc_us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_01a02127-6b40-7531-aa60-3b4029e83913" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_01a02127-6b40-703a-9587-24c5f5039ba6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAbstract_01a02127-6b40-7500-b9e9-318dcf20c8a4" xlink:to="loc_us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_01a02127-6b40-703a-9587-24c5f5039ba6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_01a02127-6b40-7eaa-a4cf-cb13d87d4a28" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAbstract_01a02127-6b40-7500-b9e9-318dcf20c8a4" xlink:to="loc_us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_01a02127-6b40-7eaa-a4cf-cb13d87d4a28" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableGross_01a02127-6b40-7fb0-bfcf-269b6dd86399" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesReceivableGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAbstract_01a02127-6b40-7500-b9e9-318dcf20c8a4" xlink:to="loc_us-gaap_NotesReceivableGross_01a02127-6b40-7fb0-bfcf-269b6dd86399" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_FinancingReceivableBeforeAllowanceForCreditLossPercent_01a02127-6b40-704c-b9b2-6225eea136cb" xlink:href="gm-20260930.xsd#gm_FinancingReceivableBeforeAllowanceForCreditLossPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAbstract_01a02127-6b40-7500-b9e9-318dcf20c8a4" xlink:to="loc_gm_FinancingReceivableBeforeAllowanceForCreditLossPercent_01a02127-6b40-704c-b9b2-6225eea136cb" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePercentPastDue1_01a02127-6b40-7c27-8b5a-8db0c670f608" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePercentPastDue1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAbstract_01a02127-6b40-7500-b9e9-318dcf20c8a4" xlink:to="loc_us-gaap_FinancingReceivablePercentPastDue1_01a02127-6b40-7c27-8b5a-8db0c670f608" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_FinancingReceivableIncludingPastDuePercent_01a02127-6b40-7361-8e23-21a2f6fb824b" xlink:href="gm-20260930.xsd#gm_FinancingReceivableIncludingPastDuePercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAbstract_01a02127-6b40-7500-b9e9-318dcf20c8a4" xlink:to="loc_gm_FinancingReceivableIncludingPastDuePercent_01a02127-6b40-7361-8e23-21a2f6fb824b" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/GMFinancialReceivablesandTransactionsCommercialFinanceReceivablesCreditQualityIndicatorsDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#GMFinancialReceivablesandTransactionsCommercialFinanceReceivablesCreditQualityIndicatorsDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/GMFinancialReceivablesandTransactionsCommercialFinanceReceivablesCreditQualityIndicatorsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-7592-9c17-bc3996e65bde" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_01a02127-6b40-7a15-a740-32226b878664" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-7592-9c17-bc3996e65bde" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_01a02127-6b40-7a15-a740-32226b878664" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6b40-7ee1-a434-9d2e9b95e244" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_01a02127-6b40-7a15-a740-32226b878664" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6b40-7ee1-a434-9d2e9b95e244" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7ee1-a434-9d2e9b95e244_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7ee1-a434-9d2e9b95e244" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7ee1-a434-9d2e9b95e244_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7b3b-8b10-abe69ee10d39" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7ee1-a434-9d2e9b95e244" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7b3b-8b10-abe69ee10d39" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6b40-7c5e-99aa-4256668aa453" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-7b3b-8b10-abe69ee10d39" xlink:to="loc_gm_GmFinancialMember_01a02127-6b40-7c5e-99aa-4256668aa453" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-78eb-bc34-84cc96d9c290" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_01a02127-6b40-7a15-a740-32226b878664" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-78eb-bc34-84cc96d9c290" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-78eb-bc34-84cc96d9c290_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-78eb-bc34-84cc96d9c290" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-78eb-bc34-84cc96d9c290_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-746b-8ed3-8cf6187bb8cc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-78eb-bc34-84cc96d9c290" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-746b-8ed3-8cf6187bb8cc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_01a02127-6b40-70c7-9715-278af28cd68b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-746b-8ed3-8cf6187bb8cc" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_01a02127-6b40-70c7-9715-278af28cd68b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a02127-6b40-7bee-b2b2-852ccb062ac6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_01a02127-6b40-7a15-a740-32226b878664" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a02127-6b40-7bee-b2b2-852ccb062ac6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a02127-6b40-7bee-b2b2-852ccb062ac6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a02127-6b40-7bee-b2b2-852ccb062ac6" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a02127-6b40-7bee-b2b2-852ccb062ac6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a02127-6b40-7b53-a77f-42922f086c99" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a02127-6b40-7bee-b2b2-852ccb062ac6" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a02127-6b40-7b53-a77f-42922f086c99" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_DealerFinancingMember_01a02127-6b40-7286-b685-ad418e0e5b66" xlink:href="gm-20260930.xsd#gm_DealerFinancingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a02127-6b40-7b53-a77f-42922f086c99" xlink:to="loc_gm_DealerFinancingMember_01a02127-6b40-7286-b685-ad418e0e5b66" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_FloorplanAdvancesMember_01a02127-6b40-78b5-930b-e31faa08edfd" xlink:href="gm-20260930.xsd#gm_FloorplanAdvancesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a02127-6b40-7b53-a77f-42922f086c99" xlink:to="loc_gm_FloorplanAdvancesMember_01a02127-6b40-78b5-930b-e31faa08edfd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentAxis_01a02127-6b40-7938-8fe3-50ac6a654bb0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InternalCreditAssessmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_01a02127-6b40-7a15-a740-32226b878664" xlink:to="loc_us-gaap_InternalCreditAssessmentAxis_01a02127-6b40-7938-8fe3-50ac6a654bb0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentDomain_01a02127-6b40-7938-8fe3-50ac6a654bb0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InternalCreditAssessmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InternalCreditAssessmentAxis_01a02127-6b40-7938-8fe3-50ac6a654bb0" xlink:to="loc_us-gaap_InternalCreditAssessmentDomain_01a02127-6b40-7938-8fe3-50ac6a654bb0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentDomain_01a02127-6b40-7d50-a2f9-d2db7fe6c6e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InternalCreditAssessmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InternalCreditAssessmentAxis_01a02127-6b40-7938-8fe3-50ac6a654bb0" xlink:to="loc_us-gaap_InternalCreditAssessmentDomain_01a02127-6b40-7d50-a2f9-d2db7fe6c6e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalInvestmentGradeMember_01a02127-6b40-7cc2-a4c2-1ab8fe03ea28" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InternalInvestmentGradeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_01a02127-6b40-7d50-a2f9-d2db7fe6c6e4" xlink:to="loc_us-gaap_InternalInvestmentGradeMember_01a02127-6b40-7cc2-a4c2-1ab8fe03ea28" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SpecialMentionMember_01a02127-6b40-786c-ac6a-4040b2bc0263" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SpecialMentionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_01a02127-6b40-7d50-a2f9-d2db7fe6c6e4" xlink:to="loc_us-gaap_SpecialMentionMember_01a02127-6b40-786c-ac6a-4040b2bc0263" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubstandardMember_01a02127-6b40-7905-932b-d4c7c263e273" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubstandardMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_01a02127-6b40-7d50-a2f9-d2db7fe6c6e4" xlink:to="loc_us-gaap_SubstandardMember_01a02127-6b40-7905-932b-d4c7c263e273" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubprimeMember_01a02127-6b40-7220-a744-bd424ea58406" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubprimeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_01a02127-6b40-7d50-a2f9-d2db7fe6c6e4" xlink:to="loc_us-gaap_SubprimeMember_01a02127-6b40-7220-a744-bd424ea58406" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRevolving_01a02127-6b40-77dd-a8ce-084a69ea3570" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRevolving"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-7592-9c17-bc3996e65bde" xlink:to="loc_us-gaap_FinancingReceivableRevolving_01a02127-6b40-77dd-a8ce-084a69ea3570" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_01a02127-6b40-7d94-af03-e7fc563e473c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-7592-9c17-bc3996e65bde" xlink:to="loc_us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_01a02127-6b40-7d94-af03-e7fc563e473c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_01a02127-6b40-7501-be16-e4ceaa489910" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-7592-9c17-bc3996e65bde" xlink:to="loc_us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_01a02127-6b40-7501-be16-e4ceaa489910" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear_01a02127-6b40-7a65-8735-27c8c93b9a4b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-7592-9c17-bc3996e65bde" xlink:to="loc_us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear_01a02127-6b40-7a65-8735-27c8c93b9a4b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_01a02127-6b40-7cac-8510-37b41a53e320" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-7592-9c17-bc3996e65bde" xlink:to="loc_us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_01a02127-6b40-7cac-8510-37b41a53e320" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_01a02127-6b40-7faf-8005-3f43b420fb8b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-7592-9c17-bc3996e65bde" xlink:to="loc_us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_01a02127-6b40-7faf-8005-3f43b420fb8b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_01a02127-6b40-7846-a61f-a0c65815234d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-7592-9c17-bc3996e65bde" xlink:to="loc_us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_01a02127-6b40-7846-a61f-a0c65815234d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableGross_01a02127-6b40-7561-8c03-ac006841d52d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesReceivableGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-7592-9c17-bc3996e65bde" xlink:to="loc_us-gaap_NotesReceivableGross_01a02127-6b40-7561-8c03-ac006841d52d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_FinancingReceivableBeforeAllowanceForCreditLossPercent_01a02127-6b40-795d-acc3-712191bcd7f8" xlink:href="gm-20260930.xsd#gm_FinancingReceivableBeforeAllowanceForCreditLossPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-7592-9c17-bc3996e65bde" xlink:to="loc_gm_FinancingReceivableBeforeAllowanceForCreditLossPercent_01a02127-6b40-795d-acc3-712191bcd7f8" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_FinancingReceivableRevolvingPercentOfTotal_01a02127-6b40-7d68-afe6-74797d6cb4e9" xlink:href="gm-20260930.xsd#gm_FinancingReceivableRevolvingPercentOfTotal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-7592-9c17-bc3996e65bde" xlink:to="loc_gm_FinancingReceivableRevolvingPercentOfTotal_01a02127-6b40-7d68-afe6-74797d6cb4e9" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_01a02127-6b40-7c42-99e2-853d4fcfd487" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a02127-6b40-7592-9c17-bc3996e65bde" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_01a02127-6b40-7c42-99e2-853d4fcfd487" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/GMFinancialReceivablesandTransactionsNarrativeDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#GMFinancialReceivablesandTransactionsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/GMFinancialReceivablesandTransactionsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a02127-6b40-7c5e-b369-9cea0dc103fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a02127-6b40-7969-90e2-cd0e4c7b934f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a02127-6b40-7c5e-b369-9cea0dc103fc" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a02127-6b40-7969-90e2-cd0e4c7b934f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6b40-749a-bc0e-7f28800ecb77" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a02127-6b40-7969-90e2-cd0e4c7b934f" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6b40-749a-bc0e-7f28800ecb77" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-749a-bc0e-7f28800ecb77_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-749a-bc0e-7f28800ecb77" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-749a-bc0e-7f28800ecb77_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7598-9dc4-f928c1795468" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-749a-bc0e-7f28800ecb77" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7598-9dc4-f928c1795468" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6b40-769b-bde7-e9425ccbc13a" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-7598-9dc4-f928c1795468" xlink:to="loc_gm_GmFinancialMember_01a02127-6b40-769b-bde7-e9425ccbc13a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContinuingInvolvementWithTransferredFinancialAssetsPrincipalAmountOutstanding_01a02127-6b40-7e85-9653-f648cd38818b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContinuingInvolvementWithTransferredFinancialAssetsPrincipalAmountOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a02127-6b40-7c5e-b369-9cea0dc103fc" xlink:to="loc_us-gaap_ContinuingInvolvementWithTransferredFinancialAssetsPrincipalAmountOutstanding_01a02127-6b40-7e85-9653-f648cd38818b" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/GMFinancialReceivablesandTransactionsIntercompanyTransactionsDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#GMFinancialReceivablesandTransactionsIntercompanyTransactionsDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/GMFinancialReceivablesandTransactionsIntercompanyTransactionsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_01a02127-6b40-7762-9502-633d3a3c40f1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_01a02127-6b40-71ad-a2e8-2715d043da10" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_01a02127-6b40-7762-9502-633d3a3c40f1" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_01a02127-6b40-71ad-a2e8-2715d043da10" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6b40-7ce3-a99d-2583254fc401" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_01a02127-6b40-71ad-a2e8-2715d043da10" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6b40-7ce3-a99d-2583254fc401" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7ce3-a99d-2583254fc401_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7ce3-a99d-2583254fc401" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7ce3-a99d-2583254fc401_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-71f5-bbeb-e2695ab0ee93" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7ce3-a99d-2583254fc401" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-71f5-bbeb-e2695ab0ee93" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6b40-7c7f-afa6-78258bf9d49d" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-71f5-bbeb-e2695ab0ee93" xlink:to="loc_gm_GmFinancialMember_01a02127-6b40-7c7f-afa6-78258bf9d49d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_01a02127-6b40-78ba-b2f3-82b19945ab4a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_01a02127-6b40-71ad-a2e8-2715d043da10" xlink:to="loc_srt_ConsolidationItemsAxis_01a02127-6b40-78ba-b2f3-82b19945ab4a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_01a02127-6b40-78ba-b2f3-82b19945ab4a_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_01a02127-6b40-78ba-b2f3-82b19945ab4a" xlink:to="loc_srt_ConsolidationItemsDomain_01a02127-6b40-78ba-b2f3-82b19945ab4a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_01a02127-6b40-7ae9-bf5a-e39f68031f4c" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_01a02127-6b40-78ba-b2f3-82b19945ab4a" xlink:to="loc_srt_ConsolidationItemsDomain_01a02127-6b40-7ae9-bf5a-e39f68031f4c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntersegmentEliminationMember_01a02127-6b40-7b20-bdba-e020e18087c3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntersegmentEliminationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_01a02127-6b40-7ae9-bf5a-e39f68031f4c" xlink:to="loc_us-gaap_IntersegmentEliminationMember_01a02127-6b40-7b20-bdba-e020e18087c3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-77d9-9f25-adcfa02d0641" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_01a02127-6b40-71ad-a2e8-2715d043da10" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-77d9-9f25-adcfa02d0641" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-77d9-9f25-adcfa02d0641_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-77d9-9f25-adcfa02d0641" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-77d9-9f25-adcfa02d0641_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-79bf-834b-78af6a8ea48e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a02127-6b40-77d9-9f25-adcfa02d0641" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-79bf-834b-78af6a8ea48e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_01a02127-6b40-70e7-9650-38f19c02ab41" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a02127-6b40-79bf-834b-78af6a8ea48e" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_01a02127-6b40-70e7-9650-38f19c02ab41" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableGross_01a02127-6b40-7be7-bdc2-30139ac1008f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesReceivableGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_01a02127-6b40-7762-9502-633d3a3c40f1" xlink:to="loc_us-gaap_NotesReceivableGross_01a02127-6b40-7be7-bdc2-30139ac1008f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_IntercompanySubventionReceivable_01a02127-6b40-79d4-9ab0-09961d40720b" xlink:href="gm-20260930.xsd#gm_IntercompanySubventionReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_01a02127-6b40-7762-9502-633d3a3c40f1" xlink:to="loc_gm_IntercompanySubventionReceivable_01a02127-6b40-79d4-9ab0-09961d40720b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_IntercompanyPayable_01a02127-6b40-7020-904f-0d65430d6121" xlink:href="gm-20260930.xsd#gm_IntercompanyPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_01a02127-6b40-7762-9502-633d3a3c40f1" xlink:to="loc_gm_IntercompanyPayable_01a02127-6b40-7020-904f-0d65430d6121" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_InterestIncomeIntercompanyTransactions_01a02127-6b40-7f20-a0c2-7489238ba2e2" xlink:href="gm-20260930.xsd#gm_InterestIncomeIntercompanyTransactions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_01a02127-6b40-7762-9502-633d3a3c40f1" xlink:to="loc_gm_InterestIncomeIntercompanyTransactions_01a02127-6b40-7f20-a0c2-7489238ba2e2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_IntercompanyTransactionsLeasedVehicleIncomeEarned_01a02127-6b40-76c7-b62c-e49559e7f93b" xlink:href="gm-20260930.xsd#gm_IntercompanyTransactionsLeasedVehicleIncomeEarned"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_01a02127-6b40-7762-9502-633d3a3c40f1" xlink:to="loc_gm_IntercompanyTransactionsLeasedVehicleIncomeEarned_01a02127-6b40-76c7-b62c-e49559e7f93b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_IntersegmentEliminationsSubventionPaid_01a02127-6b40-7529-b28f-cc90a5e6edb6" xlink:href="gm-20260930.xsd#gm_IntersegmentEliminationsSubventionPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_01a02127-6b40-7762-9502-633d3a3c40f1" xlink:to="loc_gm_IntersegmentEliminationsSubventionPaid_01a02127-6b40-7529-b28f-cc90a5e6edb6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStock_01a02127-6b40-70f7-907c-f142dd4b73a9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendsCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_01a02127-6b40-7762-9502-633d3a3c40f1" xlink:to="loc_us-gaap_DividendsCommonStock_01a02127-6b40-70f7-907c-f142dd4b73a9" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/InventoriesDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#InventoriesDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/InventoriesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryLineItems_01a02127-6b40-7dda-8043-d7b51acb1973" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryCurrentTable_01a02127-6b40-7037-80d4-ddcb691b0bdd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryCurrentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_InventoryLineItems_01a02127-6b40-7dda-8043-d7b51acb1973" xlink:to="loc_us-gaap_InventoryCurrentTable_01a02127-6b40-7037-80d4-ddcb691b0bdd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityAxis_01a02127-6b40-716c-a631-426ada5da1af" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PublicUtilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_InventoryCurrentTable_01a02127-6b40-7037-80d4-ddcb691b0bdd" xlink:to="loc_us-gaap_PublicUtilityAxis_01a02127-6b40-716c-a631-426ada5da1af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_01a02127-6b40-716c-a631-426ada5da1af_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilityAxis_01a02127-6b40-716c-a631-426ada5da1af" xlink:to="loc_us-gaap_UtilityPlantDomain_01a02127-6b40-716c-a631-426ada5da1af_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_01a02127-6b40-71f5-bb15-b6545293ea6b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilityAxis_01a02127-6b40-716c-a631-426ada5da1af" xlink:to="loc_us-gaap_UtilityPlantDomain_01a02127-6b40-71f5-bb15-b6545293ea6b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_ElectricVehicleInventoryMember_01a02127-6b40-7e39-a616-b69cad379142" xlink:href="gm-20260930.xsd#gm_ElectricVehicleInventoryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_01a02127-6b40-71f5-bb15-b6545293ea6b" xlink:to="loc_gm_ElectricVehicleInventoryMember_01a02127-6b40-7e39-a616-b69cad379142" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryValuationReserves_01a02127-6b40-7fe3-ad23-c2c996a8d170" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryValuationReserves"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_01a02127-6b40-7dda-8043-d7b51acb1973" xlink:to="loc_us-gaap_InventoryValuationReserves_01a02127-6b40-7fe3-ad23-c2c996a8d170" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/EquipmentonOperatingLeasesDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#EquipmentonOperatingLeasesDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/EquipmentonOperatingLeasesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorLeaseDescriptionLineItems_01a02127-6b40-7d68-b34c-7386daedb8cc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LessorLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorLeaseDescriptionTable_01a02127-6b40-7cc4-a730-47b19522f005" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LessorLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LessorLeaseDescriptionLineItems_01a02127-6b40-7d68-b34c-7386daedb8cc" xlink:to="loc_us-gaap_LessorLeaseDescriptionTable_01a02127-6b40-7cc4-a730-47b19522f005" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6b40-7637-a3c3-fc1683a0c6de" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LessorLeaseDescriptionTable_01a02127-6b40-7cc4-a730-47b19522f005" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6b40-7637-a3c3-fc1683a0c6de" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7637-a3c3-fc1683a0c6de_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7637-a3c3-fc1683a0c6de" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7637-a3c3-fc1683a0c6de_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-75a7-8774-0c1a63f1433f" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7637-a3c3-fc1683a0c6de" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-75a7-8774-0c1a63f1433f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6b40-7c6a-880a-b7877a9f2266" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-75a7-8774-0c1a63f1433f" xlink:to="loc_gm_GmFinancialMember_01a02127-6b40-7c6a-880a-b7877a9f2266" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_OperatingLeaseRightOfUseAssetGross_01a02127-6b40-7890-86fe-f2e583401aa0" xlink:href="gm-20260930.xsd#gm_OperatingLeaseRightOfUseAssetGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LessorLeaseDescriptionLineItems_01a02127-6b40-7d68-b34c-7386daedb8cc" xlink:to="loc_gm_OperatingLeaseRightOfUseAssetGross_01a02127-6b40-7890-86fe-f2e583401aa0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_OperatingLeaseRightOfUseAssetAccumulatedDepreciation_01a02127-6b40-7d45-a23f-313c092ed2b1" xlink:href="gm-20260930.xsd#gm_OperatingLeaseRightOfUseAssetAccumulatedDepreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LessorLeaseDescriptionLineItems_01a02127-6b40-7d68-b34c-7386daedb8cc" xlink:to="loc_gm_OperatingLeaseRightOfUseAssetAccumulatedDepreciation_01a02127-6b40-7d45-a23f-313c092ed2b1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_01a02127-6b40-7c68-a016-74075203781e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LessorLeaseDescriptionLineItems_01a02127-6b40-7d68-b34c-7386daedb8cc" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_01a02127-6b40-7c68-a016-74075203781e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseResidualValueOfLeasedAsset_01a02127-6b40-718a-9ebf-7871b0d94485" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseResidualValueOfLeasedAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LessorLeaseDescriptionLineItems_01a02127-6b40-7d68-b34c-7386daedb8cc" xlink:to="loc_us-gaap_OperatingLeaseResidualValueOfLeasedAsset_01a02127-6b40-718a-9ebf-7871b0d94485" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_01a02127-6b40-780d-8642-b80060ae49b1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Depreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LessorLeaseDescriptionLineItems_01a02127-6b40-7d68-b34c-7386daedb8cc" xlink:to="loc_us-gaap_Depreciation_01a02127-6b40-780d-8642-b80060ae49b1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsFiscalYearMaturityAbstract_01a02127-6b40-7b35-9023-0b4c0d64cc81" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LessorOperatingLeasePaymentsFiscalYearMaturityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LessorLeaseDescriptionLineItems_01a02127-6b40-7d68-b34c-7386daedb8cc" xlink:to="loc_us-gaap_LessorOperatingLeasePaymentsFiscalYearMaturityAbstract_01a02127-6b40-7b35-9023-0b4c0d64cc81" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear_01a02127-6b40-7363-ae3f-aa1bf040e2a1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsFiscalYearMaturityAbstract_01a02127-6b40-7b35-9023-0b4c0d64cc81" xlink:to="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear_01a02127-6b40-7363-ae3f-aa1bf040e2a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths_01a02127-6b40-72c4-acc7-b9b4c8532811" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsFiscalYearMaturityAbstract_01a02127-6b40-7b35-9023-0b4c0d64cc81" xlink:to="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths_01a02127-6b40-72c4-acc7-b9b4c8532811" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears_01a02127-6b40-76ab-9e66-fcc42ae9922f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsFiscalYearMaturityAbstract_01a02127-6b40-7b35-9023-0b4c0d64cc81" xlink:to="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears_01a02127-6b40-76ab-9e66-fcc42ae9922f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears_01a02127-6b40-7004-83f4-8abc126938fe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsFiscalYearMaturityAbstract_01a02127-6b40-7b35-9023-0b4c0d64cc81" xlink:to="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears_01a02127-6b40-7004-83f4-8abc126938fe" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears_01a02127-6b40-73e0-977b-730afcb07fd4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsFiscalYearMaturityAbstract_01a02127-6b40-7b35-9023-0b4c0d64cc81" xlink:to="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears_01a02127-6b40-73e0-977b-730afcb07fd4" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_LessorOperatingLeasePaymentToBeReceivedAfterYearFour_01a02127-6b40-7e64-b6bc-8a275769c476" xlink:href="gm-20260930.xsd#gm_LessorOperatingLeasePaymentToBeReceivedAfterYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsFiscalYearMaturityAbstract_01a02127-6b40-7b35-9023-0b4c0d64cc81" xlink:to="loc_gm_LessorOperatingLeasePaymentToBeReceivedAfterYearFour_01a02127-6b40-7e64-b6bc-8a275769c476" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceived_01a02127-6b40-7713-b57d-1fb0bf59f690" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceived"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsFiscalYearMaturityAbstract_01a02127-6b40-7b35-9023-0b4c0d64cc81" xlink:to="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceived_01a02127-6b40-7713-b57d-1fb0bf59f690" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/EquityinNetAssetsofNonconsolidatedAffiliatesDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#EquityinNetAssetsofNonconsolidatedAffiliatesDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/EquityinNetAssetsofNonconsolidatedAffiliatesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a02127-6b40-7bca-8768-256fc0bcf891" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_01a02127-6b40-74d9-9651-befd15fe1582" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a02127-6b40-7bca-8768-256fc0bcf891" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_01a02127-6b40-74d9-9651-befd15fe1582" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_01a02127-6b40-7b0c-a775-9adf76b084a2" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_01a02127-6b40-74d9-9651-befd15fe1582" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_01a02127-6b40-7b0c-a775-9adf76b084a2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_01a02127-6b40-7b0c-a775-9adf76b084a2_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_01a02127-6b40-7b0c-a775-9adf76b084a2" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_01a02127-6b40-7b0c-a775-9adf76b084a2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_01a02127-6b40-7f0d-94c5-c81d012c2f96" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_01a02127-6b40-7b0c-a775-9adf76b084a2" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_01a02127-6b40-7f0d-94c5-c81d012c2f96" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_AutomotiveChinaJointVenturesMember_01a02127-6b40-7a96-b73a-e32466ef4f64" xlink:href="gm-20260930.xsd#gm_AutomotiveChinaJointVenturesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_01a02127-6b40-7f0d-94c5-c81d012c2f96" xlink:to="loc_gm_AutomotiveChinaJointVenturesMember_01a02127-6b40-7a96-b73a-e32466ef4f64" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_OtherJointVenturesMember_01a02127-6b40-79bf-99ad-5ce418f265a4" xlink:href="gm-20260930.xsd#gm_OtherJointVenturesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_01a02127-6b40-7f0d-94c5-c81d012c2f96" xlink:to="loc_gm_OtherJointVenturesMember_01a02127-6b40-79bf-99ad-5ce418f265a4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_UltiumCellsHoldingsLLCMember_01a06069-cb3f-7af8-8917-52b739baaf74" xlink:href="gm-20260930.xsd#gm_UltiumCellsHoldingsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_01a02127-6b40-7f0d-94c5-c81d012c2f96" xlink:to="loc_gm_UltiumCellsHoldingsLLCMember_01a06069-cb3f-7af8-8917-52b739baaf74" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_AutomotiveChinaJointVenturesAndUltiumCellHoldingsLLCMember_01a02127-6b40-7d82-a2ea-4897f4868f4b" xlink:href="gm-20260930.xsd#gm_AutomotiveChinaJointVenturesAndUltiumCellHoldingsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_01a02127-6b40-7f0d-94c5-c81d012c2f96" xlink:to="loc_gm_AutomotiveChinaJointVenturesAndUltiumCellHoldingsLLCMember_01a02127-6b40-7d82-a2ea-4897f4868f4b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a02127-6b40-7c80-974c-6561cb34b150" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_01a02127-6b40-74d9-9651-befd15fe1582" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a02127-6b40-7c80-974c-6561cb34b150" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_01a02127-6b40-7c80-974c-6561cb34b150_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a02127-6b40-7c80-974c-6561cb34b150" xlink:to="loc_us-gaap_RelatedPartyDomain_01a02127-6b40-7c80-974c-6561cb34b150_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_01a02127-6b40-7f26-945b-6cd8adbcffa4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a02127-6b40-7c80-974c-6561cb34b150" xlink:to="loc_us-gaap_RelatedPartyDomain_01a02127-6b40-7f26-945b-6cd8adbcffa4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvesteeMember_01a02127-6b40-76a0-a2d0-be0e0f1c9a2b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvesteeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_01a02127-6b40-7f26-945b-6cd8adbcffa4" xlink:to="loc_us-gaap_EquityMethodInvesteeMember_01a02127-6b40-76a0-a2d0-be0e0f1c9a2b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_01a02127-6b40-76e6-b2c5-9e56ad988eb3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_01a02127-6b40-74d9-9651-befd15fe1582" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_01a02127-6b40-76e6-b2c5-9e56ad988eb3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_01a02127-6b40-76e6-b2c5-9e56ad988eb3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_01a02127-6b40-76e6-b2c5-9e56ad988eb3" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_01a02127-6b40-76e6-b2c5-9e56ad988eb3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_01a02127-6b40-799b-97b7-e1ce3f56af08" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_01a02127-6b40-76e6-b2c5-9e56ad988eb3" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_01a02127-6b40-799b-97b7-e1ce3f56af08" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_AutomotiveChinaJointVenturesMember_01a02127-6b40-71d1-b24e-2d12b36d721c" xlink:href="gm-20260930.xsd#gm_AutomotiveChinaJointVenturesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_01a02127-6b40-799b-97b7-e1ce3f56af08" xlink:to="loc_gm_AutomotiveChinaJointVenturesMember_01a02127-6b40-71d1-b24e-2d12b36d721c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember_01a02127-6b40-7e8e-b15c-e4cc107fecdc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_01a02127-6b40-799b-97b7-e1ce3f56af08" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember_01a02127-6b40-7e8e-b15c-e4cc107fecdc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_01a02127-6b40-7d1c-bf81-054117833657" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a02127-6b40-7bca-8768-256fc0bcf891" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_01a02127-6b40-7d1c-bf81-054117833657" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal_01a0ae78-0a30-7740-80c9-d963792fb23b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a02127-6b40-7bca-8768-256fc0bcf891" xlink:to="loc_us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal_01a0ae78-0a30-7740-80c9-d963792fb23b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment_01a06057-db97-7e0c-a4fe-c114715f102e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a02127-6b40-7bca-8768-256fc0bcf891" xlink:to="loc_us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment_01a06057-db97-7e0c-a4fe-c114715f102e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_EquityMethodInvestmentChangeinOwnershipPercentage_01a02127-6b40-7791-8080-908c9fa0b621" xlink:href="gm-20260930.xsd#gm_EquityMethodInvestmentChangeinOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a02127-6b40-7bca-8768-256fc0bcf891" xlink:to="loc_gm_EquityMethodInvestmentChangeinOwnershipPercentage_01a02127-6b40-7791-8080-908c9fa0b621" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_01a02127-6b40-76a6-bf0f-97c90b158a46" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a02127-6b40-7bca-8768-256fc0bcf891" xlink:to="loc_us-gaap_Revenues_01a02127-6b40-76a6-bf0f-97c90b158a46" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_01a02127-6b40-75b0-8489-e3e46feae770" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a02127-6b40-7bca-8768-256fc0bcf891" xlink:to="loc_us-gaap_ProfitLoss_01a02127-6b40-75b0-8489-e3e46feae770" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Dividends_01a02127-6b40-73c6-b694-be45954b002b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Dividends"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a02127-6b40-7bca-8768-256fc0bcf891" xlink:to="loc_us-gaap_Dividends_01a02127-6b40-73c6-b694-be45954b002b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital_01a02127-6b40-7768-b747-eea68f69eac9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a02127-6b40-7bca-8768-256fc0bcf891" xlink:to="loc_us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital_01a02127-6b40-7768-b747-eea68f69eac9" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsUndistributedEarningsFromEquityMethodInvestees_01a02127-6b40-7287-809f-6db30ad25cb2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsUndistributedEarningsFromEquityMethodInvestees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a02127-6b40-7bca-8768-256fc0bcf891" xlink:to="loc_us-gaap_RetainedEarningsUndistributedEarningsFromEquityMethodInvestees_01a02127-6b40-7287-809f-6db30ad25cb2" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_RetainedEarningsUndistributedLossesFromEquityMethodInvestees_01a02127-6b40-745a-8633-fbd514dfcb74" xlink:href="gm-20260930.xsd#gm_RetainedEarningsUndistributedLossesFromEquityMethodInvestees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a02127-6b40-7bca-8768-256fc0bcf891" xlink:to="loc_gm_RetainedEarningsUndistributedLossesFromEquityMethodInvestees_01a02127-6b40-745a-8633-fbd514dfcb74" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/VariableInterestEntitiesDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#VariableInterestEntitiesDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/VariableInterestEntitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityLineItems_01a02127-6b40-71f9-a2b3-5065bd76fecf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableInterestEntityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_01a02127-6b40-762b-a2ae-0dee7eaede78" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfVariableInterestEntitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_01a02127-6b40-71f9-a2b3-5065bd76fecf" xlink:to="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_01a02127-6b40-762b-a2ae-0dee7eaede78" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6b40-7d68-a2f2-cab63ac24c00" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_01a02127-6b40-762b-a2ae-0dee7eaede78" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6b40-7d68-a2f2-cab63ac24c00" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7d68-a2f2-cab63ac24c00_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7d68-a2f2-cab63ac24c00" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7d68-a2f2-cab63ac24c00_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-766e-9be8-fac237a41add" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7d68-a2f2-cab63ac24c00" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-766e-9be8-fac237a41add" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6b40-77ce-aad7-c6a2e11cfd31" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-766e-9be8-fac237a41add" xlink:to="loc_gm_GmFinancialMember_01a02127-6b40-77ce-aad7-c6a2e11cfd31" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_01a02127-6b40-7589-b67f-46e9db5c4e81" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_01a02127-6b40-762b-a2ae-0dee7eaede78" xlink:to="loc_srt_ConsolidatedEntitiesAxis_01a02127-6b40-7589-b67f-46e9db5c4e81" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_01a02127-6b40-7589-b67f-46e9db5c4e81_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_01a02127-6b40-7589-b67f-46e9db5c4e81" xlink:to="loc_srt_ConsolidatedEntitiesDomain_01a02127-6b40-7589-b67f-46e9db5c4e81_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_01a02127-6b40-776b-9787-b6f8998eb5d4" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_01a02127-6b40-7589-b67f-46e9db5c4e81" xlink:to="loc_srt_ConsolidatedEntitiesDomain_01a02127-6b40-776b-9787-b6f8998eb5d4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_01a02127-6b40-7df7-93cc-dd096a4fab6e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableInterestEntityPrimaryBeneficiaryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_01a02127-6b40-776b-9787-b6f8998eb5d4" xlink:to="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_01a02127-6b40-7df7-93cc-dd096a4fab6e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_01a02127-6b40-768e-9ba2-8fdf7386b86c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_01a02127-6b40-776b-9787-b6f8998eb5d4" xlink:to="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_01a02127-6b40-768e-9ba2-8fdf7386b86c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_01a02127-6b40-7976-bcdc-bb91d1339695" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_01a02127-6b40-762b-a2ae-0dee7eaede78" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_01a02127-6b40-7976-bcdc-bb91d1339695" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_01a02127-6b40-7976-bcdc-bb91d1339695_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_01a02127-6b40-7976-bcdc-bb91d1339695" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_01a02127-6b40-7976-bcdc-bb91d1339695_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_01a02127-6b40-7c9d-8a88-c2866c9161c5" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_01a02127-6b40-7976-bcdc-bb91d1339695" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_01a02127-6b40-7c9d-8a88-c2866c9161c5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BatteryCellManufacturingJointVenturesMember_01a02127-6b40-7a96-82a1-e6c1ab2726d1" xlink:href="gm-20260930.xsd#gm_BatteryCellManufacturingJointVenturesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_01a02127-6b40-7c9d-8a88-c2866c9161c5" xlink:to="loc_gm_BatteryCellManufacturingJointVenturesMember_01a02127-6b40-7a96-82a1-e6c1ab2726d1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis_01a02127-6b40-7992-8709-0789453b6bd8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_01a02127-6b40-762b-a2ae-0dee7eaede78" xlink:to="loc_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis_01a02127-6b40-7992-8709-0789453b6bd8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain_01a02127-6b40-7992-8709-0789453b6bd8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis_01a02127-6b40-7992-8709-0789453b6bd8" xlink:to="loc_us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain_01a02127-6b40-7992-8709-0789453b6bd8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain_01a02127-6b40-78db-a0de-e7ba823b0541" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis_01a02127-6b40-7992-8709-0789453b6bd8" xlink:to="loc_us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain_01a02127-6b40-78db-a0de-e7ba823b0541" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalAdditionsMember_01a02127-6b40-7176-a385-a2b667b7aef4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CapitalAdditionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain_01a02127-6b40-78db-a0de-e7ba823b0541" xlink:to="loc_us-gaap_CapitalAdditionsMember_01a02127-6b40-7176-a385-a2b667b7aef4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_ConsolidatedAbstract_01a02127-6b40-76cb-aadd-5c68f0efdb8f" xlink:href="gm-20260930.xsd#gm_ConsolidatedAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_01a02127-6b40-71f9-a2b3-5065bd76fecf" xlink:to="loc_gm_ConsolidatedAbstract_01a02127-6b40-76cb-aadd-5c68f0efdb8f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndInvestmentsCurrent_01a02127-6b40-775b-9a60-c62a379aa00c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndInvestmentsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_ConsolidatedAbstract_01a02127-6b40-76cb-aadd-5c68f0efdb8f" xlink:to="loc_us-gaap_RestrictedCashAndInvestmentsCurrent_01a02127-6b40-775b-9a60-c62a379aa00c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndInvestmentsNoncurrent_01a02127-6b40-72fd-8347-2c4c5fc1bf2a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndInvestmentsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_ConsolidatedAbstract_01a02127-6b40-76cb-aadd-5c68f0efdb8f" xlink:to="loc_us-gaap_RestrictedCashAndInvestmentsNoncurrent_01a02127-6b40-72fd-8347-2c4c5fc1bf2a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesAndLoansReceivableNetCurrent_01a02127-6b40-73b3-8371-eac6a261b6ad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesAndLoansReceivableNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_ConsolidatedAbstract_01a02127-6b40-76cb-aadd-5c68f0efdb8f" xlink:to="loc_us-gaap_NotesAndLoansReceivableNetCurrent_01a02127-6b40-73b3-8371-eac6a261b6ad" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesAndLoansReceivableNetNoncurrent_01a02127-6b40-74bb-9e49-7d51b92c1782" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesAndLoansReceivableNetNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_ConsolidatedAbstract_01a02127-6b40-76cb-aadd-5c68f0efdb8f" xlink:to="loc_us-gaap_NotesAndLoansReceivableNetNoncurrent_01a02127-6b40-74bb-9e49-7d51b92c1782" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseNet_01a02127-6b40-7313-83e4-e66257d2198b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertySubjectToOrAvailableForOperatingLeaseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_ConsolidatedAbstract_01a02127-6b40-76cb-aadd-5c68f0efdb8f" xlink:to="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseNet_01a02127-6b40-7313-83e4-e66257d2198b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtCurrent_01a02127-6b40-7bdd-aecd-953e7d3edd93" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_ConsolidatedAbstract_01a02127-6b40-76cb-aadd-5c68f0efdb8f" xlink:to="loc_us-gaap_DebtCurrent_01a02127-6b40-7bdd-aecd-953e7d3edd93" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_01a02127-6b40-7152-915e-187e2d601c26" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_ConsolidatedAbstract_01a02127-6b40-76cb-aadd-5c68f0efdb8f" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_01a02127-6b40-7152-915e-187e2d601c26" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_01a02127-6b40-7d35-920c-d099bd98c2c0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_01a02127-6b40-71f9-a2b3-5065bd76fecf" xlink:to="loc_us-gaap_Assets_01a02127-6b40-7d35-920c-d099bd98c2c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_01a0799a-2335-73a7-b183-36e8dd62bb2e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_01a02127-6b40-71f9-a2b3-5065bd76fecf" xlink:to="loc_us-gaap_Liabilities_01a0799a-2335-73a7-b183-36e8dd62bb2e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_01a02127-6b40-7dce-8bbb-c0c130e5aff8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_01a02127-6b40-71f9-a2b3-5065bd76fecf" xlink:to="loc_us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_01a02127-6b40-7dce-8bbb-c0c130e5aff8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentAmount_01a02127-6b40-7882-bc96-fe4933cbc0ce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermPurchaseCommitmentAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_01a02127-6b40-71f9-a2b3-5065bd76fecf" xlink:to="loc_us-gaap_LongTermPurchaseCommitmentAmount_01a02127-6b40-7882-bc96-fe4933cbc0ce" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/DebtDebtCarryingAmountandFairValueDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#DebtDebtCarryingAmountandFairValueDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/DebtDebtCarryingAmountandFairValueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7852-bbeb-9718f904cadd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_01a02127-6b40-721f-8dca-472fbbe33620" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7852-bbeb-9718f904cadd" xlink:to="loc_us-gaap_DebtInstrumentTable_01a02127-6b40-721f-8dca-472fbbe33620" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_DebtTypeAxis_01a02127-6b40-7301-ac2a-6575336c2632" xlink:href="gm-20260930.xsd#gm_DebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a02127-6b40-721f-8dca-472fbbe33620" xlink:to="loc_gm_DebtTypeAxis_01a02127-6b40-7301-ac2a-6575336c2632" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_DebtTypeDomain_01a02127-6b40-7301-ac2a-6575336c2632_default" xlink:href="gm-20260930.xsd#gm_DebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_DebtTypeAxis_01a02127-6b40-7301-ac2a-6575336c2632" xlink:to="loc_gm_DebtTypeDomain_01a02127-6b40-7301-ac2a-6575336c2632_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_DebtTypeDomain_01a02127-6b40-7e8a-bb02-880f22884008" xlink:href="gm-20260930.xsd#gm_DebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_DebtTypeAxis_01a02127-6b40-7301-ac2a-6575336c2632" xlink:to="loc_gm_DebtTypeDomain_01a02127-6b40-7e8a-bb02-880f22884008" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_01a02127-6b40-7cba-a948-d96bfa75db33" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_DebtTypeDomain_01a02127-6b40-7e8a-bb02-880f22884008" xlink:to="loc_us-gaap_SecuredDebtMember_01a02127-6b40-7cba-a948-d96bfa75db33" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_01a02127-6b40-7ca4-83ae-ec19e287efc5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnsecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_DebtTypeDomain_01a02127-6b40-7e8a-bb02-880f22884008" xlink:to="loc_us-gaap_UnsecuredDebtMember_01a02127-6b40-7ca4-83ae-ec19e287efc5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6b40-7007-a926-9418a1111af3" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a02127-6b40-721f-8dca-472fbbe33620" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6b40-7007-a926-9418a1111af3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7007-a926-9418a1111af3_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7007-a926-9418a1111af3" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7007-a926-9418a1111af3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7c26-a0f7-6e0d77154077" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7007-a926-9418a1111af3" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7c26-a0f7-6e0d77154077" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_AutomotiveMember_01a02127-6b40-7980-95f9-3e8c97ebb96e" xlink:href="gm-20260930.xsd#gm_AutomotiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-7c26-a0f7-6e0d77154077" xlink:to="loc_gm_AutomotiveMember_01a02127-6b40-7980-95f9-3e8c97ebb96e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6b40-78a3-b7ec-106575ab0e4e" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-7c26-a0f7-6e0d77154077" xlink:to="loc_gm_GmFinancialMember_01a02127-6b40-78a3-b7ec-106575ab0e4e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a02127-6b40-7a90-b7cf-bc1c2da9a847" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a02127-6b40-721f-8dca-472fbbe33620" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a02127-6b40-7a90-b7cf-bc1c2da9a847" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6b40-7a90-b7cf-bc1c2da9a847_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a02127-6b40-7a90-b7cf-bc1c2da9a847" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6b40-7a90-b7cf-bc1c2da9a847_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6b40-717a-a387-fcae62221874" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a02127-6b40-7a90-b7cf-bc1c2da9a847" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6b40-717a-a387-fcae62221874" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_01a02127-6b40-7550-a011-41580553f255" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6b40-717a-a387-fcae62221874" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_01a02127-6b40-7550-a011-41580553f255" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_01a02127-6b40-7a8f-aa84-6947276749e7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6b40-717a-a387-fcae62221874" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_01a02127-6b40-7a8f-aa84-6947276749e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_01a02127-6b40-7fb5-bf40-2351b9affec3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6b40-717a-a387-fcae62221874" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_01a02127-6b40-7fb5-bf40-2351b9affec3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_01a02127-6b40-7e69-a6cd-566a82251711" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a02127-6b40-721f-8dca-472fbbe33620" xlink:to="loc_us-gaap_DebtInstrumentAxis_01a02127-6b40-7e69-a6cd-566a82251711" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a02127-6b40-7e69-a6cd-566a82251711_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a02127-6b40-7e69-a6cd-566a82251711" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a02127-6b40-7e69-a6cd-566a82251711_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a02127-6b40-74d1-a2f2-6ecdbeeccf2d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a02127-6b40-7e69-a6cd-566a82251711" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a02127-6b40-74d1-a2f2-6ecdbeeccf2d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_TwoBillionDollarRevolvingCreditFacilityMember_01a02127-6b40-7cb2-89f7-886cfc83c05d" xlink:href="gm-20260930.xsd#gm_TwoBillionDollarRevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a02127-6b40-74d1-a2f2-6ecdbeeccf2d" xlink:to="loc_gm_TwoBillionDollarRevolvingCreditFacilityMember_01a02127-6b40-7cb2-89f7-886cfc83c05d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_01a02127-6b40-736e-a4fa-eb884a08a319" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a02127-6b40-721f-8dca-472fbbe33620" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_01a02127-6b40-736e-a4fa-eb884a08a319" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a02127-6b40-736e-a4fa-eb884a08a319_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a02127-6b40-736e-a4fa-eb884a08a319" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a02127-6b40-736e-a4fa-eb884a08a319_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a02127-6b40-70b3-b41f-ba03c5c6af66" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a02127-6b40-736e-a4fa-eb884a08a319" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a02127-6b40-70b3-b41f-ba03c5c6af66" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_01a02127-6b40-7830-96b7-ac625a313fa0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a02127-6b40-70b3-b41f-ba03c5c6af66" xlink:to="loc_us-gaap_LineOfCreditMember_01a02127-6b40-7830-96b7-ac625a313fa0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_01a02127-6b40-70dc-ad94-f583c61fd792" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7852-bbeb-9718f904cadd" xlink:to="loc_us-gaap_LongTermDebt_01a02127-6b40-70dc-ad94-f583c61fd792" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtFairValue_01a02127-6b40-799c-a347-b771e7401962" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7852-bbeb-9718f904cadd" xlink:to="loc_us-gaap_LongTermDebtFairValue_01a02127-6b40-799c-a347-b771e7401962" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiability_01a02127-6b40-7e61-aff2-2dc956397a2f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7852-bbeb-9718f904cadd" xlink:to="loc_us-gaap_FinanceLeaseLiability_01a02127-6b40-7e61-aff2-2dc956397a2f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_FinanceLeaseLiabilitiesFairValueDisclosure_01a02127-6b40-7d72-bfae-4fd405d6240e" xlink:href="gm-20260930.xsd#gm_FinanceLeaseLiabilitiesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7852-bbeb-9718f904cadd" xlink:to="loc_gm_FinanceLeaseLiabilitiesFairValueDisclosure_01a02127-6b40-7d72-bfae-4fd405d6240e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_DebtAndFinanceLeaseLiabilities_01a02127-6b40-7767-a2a2-b2daa89bb040" xlink:href="gm-20260930.xsd#gm_DebtAndFinanceLeaseLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7852-bbeb-9718f904cadd" xlink:to="loc_gm_DebtAndFinanceLeaseLiabilities_01a02127-6b40-7767-a2a2-b2daa89bb040" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFairValue_01a02127-6b40-7ce0-9304-d565da29b387" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7852-bbeb-9718f904cadd" xlink:to="loc_us-gaap_DebtInstrumentFairValue_01a02127-6b40-7ce0-9304-d565da29b387" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_01a02127-6b40-7534-95fb-c697f1e1ddfa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7852-bbeb-9718f904cadd" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_01a02127-6b40-7534-95fb-c697f1e1ddfa" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtWeightedAverageInterestRate_01a02127-6b40-7fbb-86e4-ca9e68e7b097" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtWeightedAverageInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7852-bbeb-9718f904cadd" xlink:to="loc_us-gaap_ShortTermDebtWeightedAverageInterestRate_01a02127-6b40-7fbb-86e4-ca9e68e7b097" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtWeightedAverageInterestRate_01a02127-6b40-70ff-aa2d-37485539f75e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtWeightedAverageInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7852-bbeb-9718f904cadd" xlink:to="loc_us-gaap_LongtermDebtWeightedAverageInterestRate_01a02127-6b40-70ff-aa2d-37485539f75e" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_01a02127-6b40-76d0-8720-5119ec4ed746" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7852-bbeb-9718f904cadd" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_01a02127-6b40-76d0-8720-5119ec4ed746" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_01a02127-6b40-7feb-9615-0486ad151fad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7852-bbeb-9718f904cadd" xlink:to="loc_us-gaap_DebtInstrumentTerm_01a02127-6b40-7feb-9615-0486ad151fad" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_01a02127-6b40-763d-b6f4-80440a337e24" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7852-bbeb-9718f904cadd" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_01a02127-6b40-763d-b6f4-80440a337e24" xlink:type="arc" order="11"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/DebtNarrativeDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#DebtNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/DebtNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7ed8-849e-f38a0939b820" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_01a02127-6b40-77ba-8e5c-6ff6062791bf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7ed8-849e-f38a0939b820" xlink:to="loc_us-gaap_DebtInstrumentTable_01a02127-6b40-77ba-8e5c-6ff6062791bf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_DebtTypeAxis_01a02127-6b40-7ed4-90c1-4d11b3714d8f" xlink:href="gm-20260930.xsd#gm_DebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a02127-6b40-77ba-8e5c-6ff6062791bf" xlink:to="loc_gm_DebtTypeAxis_01a02127-6b40-7ed4-90c1-4d11b3714d8f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_DebtTypeDomain_01a02127-6b40-7ed4-90c1-4d11b3714d8f_default" xlink:href="gm-20260930.xsd#gm_DebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_DebtTypeAxis_01a02127-6b40-7ed4-90c1-4d11b3714d8f" xlink:to="loc_gm_DebtTypeDomain_01a02127-6b40-7ed4-90c1-4d11b3714d8f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_DebtTypeDomain_01a02127-6b40-7d1d-9970-a27e3d43c567" xlink:href="gm-20260930.xsd#gm_DebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_DebtTypeAxis_01a02127-6b40-7ed4-90c1-4d11b3714d8f" xlink:to="loc_gm_DebtTypeDomain_01a02127-6b40-7d1d-9970-a27e3d43c567" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_01a02127-6b40-7101-b25c-7859872c7576" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnsecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_DebtTypeDomain_01a02127-6b40-7d1d-9970-a27e3d43c567" xlink:to="loc_us-gaap_UnsecuredDebtMember_01a02127-6b40-7101-b25c-7859872c7576" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_01a02127-6b40-7e72-9b25-661c21db6788" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_DebtTypeDomain_01a02127-6b40-7d1d-9970-a27e3d43c567" xlink:to="loc_us-gaap_SecuredDebtMember_01a02127-6b40-7e72-9b25-661c21db6788" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_01a02127-6b40-718f-8a5f-09d9948817d9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a02127-6b40-77ba-8e5c-6ff6062791bf" xlink:to="loc_us-gaap_DebtInstrumentAxis_01a02127-6b40-718f-8a5f-09d9948817d9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a02127-6b40-718f-8a5f-09d9948817d9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a02127-6b40-718f-8a5f-09d9948817d9" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a02127-6b40-718f-8a5f-09d9948817d9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a02127-6b40-77a4-b09b-755f11a97899" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a02127-6b40-718f-8a5f-09d9948817d9" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a02127-6b40-77a4-b09b-755f11a97899" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_InventoryBankingFacilityMember_01a0c63c-e5b4-78e0-84d3-b25084d1531a" xlink:href="gm-20260930.xsd#gm_InventoryBankingFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a02127-6b40-77a4-b09b-755f11a97899" xlink:to="loc_gm_InventoryBankingFacilityMember_01a0c63c-e5b4-78e0-84d3-b25084d1531a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_TwoBillionDollarRevolvingCreditFacilityMember_01a02127-6b40-772a-aba0-e5c48927d78f" xlink:href="gm-20260930.xsd#gm_TwoBillionDollarRevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a02127-6b40-77a4-b09b-755f11a97899" xlink:to="loc_gm_TwoBillionDollarRevolvingCreditFacilityMember_01a02127-6b40-772a-aba0-e5c48927d78f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_SecuritizationNotesPayableMember_01a02127-6b40-7a33-8e0d-51381ffa01bf" xlink:href="gm-20260930.xsd#gm_SecuritizationNotesPayableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a02127-6b40-77a4-b09b-755f11a97899" xlink:to="loc_gm_SecuritizationNotesPayableMember_01a02127-6b40-7a33-8e0d-51381ffa01bf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_01a02127-6b40-724c-b6e8-c18908e69caf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a02127-6b40-77ba-8e5c-6ff6062791bf" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_01a02127-6b40-724c-b6e8-c18908e69caf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a02127-6b40-724c-b6e8-c18908e69caf_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a02127-6b40-724c-b6e8-c18908e69caf" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a02127-6b40-724c-b6e8-c18908e69caf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a02127-6b40-7b88-b01e-ba85feef9101" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a02127-6b40-724c-b6e8-c18908e69caf" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a02127-6b40-7b88-b01e-ba85feef9101" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_01a02127-6b40-78d4-b242-3254697bdd73" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a02127-6b40-7b88-b01e-ba85feef9101" xlink:to="loc_us-gaap_LineOfCreditMember_01a02127-6b40-78d4-b242-3254697bdd73" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayableOtherPayablesMember_01a02127-6b40-7daa-a4ed-9d7fa6993388" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesPayableOtherPayablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a02127-6b40-7b88-b01e-ba85feef9101" xlink:to="loc_us-gaap_NotesPayableOtherPayablesMember_01a02127-6b40-7daa-a4ed-9d7fa6993388" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_01a02127-6b40-7657-99be-5ac1b2ba6fa6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a02127-6b40-7b88-b01e-ba85feef9101" xlink:to="loc_us-gaap_SeniorNotesMember_01a02127-6b40-7657-99be-5ac1b2ba6fa6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6b40-79ef-b17b-7e5f64f3cf17" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a02127-6b40-77ba-8e5c-6ff6062791bf" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6b40-79ef-b17b-7e5f64f3cf17" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-79ef-b17b-7e5f64f3cf17_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-79ef-b17b-7e5f64f3cf17" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-79ef-b17b-7e5f64f3cf17_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7a73-803f-e2078b31dd12" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-79ef-b17b-7e5f64f3cf17" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7a73-803f-e2078b31dd12" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6b40-7433-8aef-63e2bd5ddfd9" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-7a73-803f-e2078b31dd12" xlink:to="loc_gm_GmFinancialMember_01a02127-6b40-7433-8aef-63e2bd5ddfd9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_01a02127-6b40-7e8d-9ac5-312820368fbc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a02127-6b40-77ba-8e5c-6ff6062791bf" xlink:to="loc_us-gaap_CreditFacilityAxis_01a02127-6b40-7e8d-9ac5-312820368fbc" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a02127-6b40-7e8d-9ac5-312820368fbc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_01a02127-6b40-7e8d-9ac5-312820368fbc" xlink:to="loc_us-gaap_CreditFacilityDomain_01a02127-6b40-7e8d-9ac5-312820368fbc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a02127-6b40-7a10-add8-ce8b0142f70f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_01a02127-6b40-7e8d-9ac5-312820368fbc" xlink:to="loc_us-gaap_CreditFacilityDomain_01a02127-6b40-7a10-add8-ce8b0142f70f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_01a02127-6b40-7a86-91b2-b06be6ad7bfa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a02127-6b40-7a10-add8-ce8b0142f70f" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_01a02127-6b40-7a86-91b2-b06be6ad7bfa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_01a0c643-074f-74d4-84b8-0dc6e1cab0b5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7ed8-849e-f38a0939b820" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_01a0c643-074f-74d4-84b8-0dc6e1cab0b5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_LineOfCreditFacilityFundingPeriod_01a110d6-bfcc-71eb-89d3-1f4f7f10bc1a" xlink:href="gm-20260930.xsd#gm_LineOfCreditFacilityFundingPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7ed8-849e-f38a0939b820" xlink:to="loc_gm_LineOfCreditFacilityFundingPeriod_01a110d6-bfcc-71eb-89d3-1f4f7f10bc1a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_01a0c655-fb22-741b-9e8a-9bede81ba425" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7ed8-849e-f38a0939b820" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_01a0c655-fb22-741b-9e8a-9bede81ba425" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_01a02127-6b40-7ee2-baee-5772aae83de8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7ed8-849e-f38a0939b820" xlink:to="loc_us-gaap_DebtInstrumentTerm_01a02127-6b40-7ee2-baee-5772aae83de8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_01a02127-6b40-77f3-8916-49a90f94a169" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_01a02127-6b40-7d80-8595-b850d5e8d214" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7ed8-849e-f38a0939b820" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_01a02127-6b40-7d80-8595-b850d5e8d214" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtWeightedAverageInterestRate_01a02127-6b40-76e1-a9ee-a354b2b6145a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtWeightedAverageInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a02127-6b40-7ed8-849e-f38a0939b820" xlink:to="loc_us-gaap_DebtWeightedAverageInterestRate_01a02127-6b40-76e1-a9ee-a354b2b6145a" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/DerivativeFinancialInstrumentsNotionalAmountsforDerivativeFinancialInstrumentsDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#DerivativeFinancialInstrumentsNotionalAmountsforDerivativeFinancialInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/DerivativeFinancialInstrumentsNotionalAmountsforDerivativeFinancialInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_01a02127-6b40-7388-a4c1-fa79729f50b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_01a02127-6b40-7f43-a54a-c38ddbd39ff6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_01a02127-6b40-7388-a4c1-fa79729f50b6" xlink:to="loc_us-gaap_DerivativeTable_01a02127-6b40-7f43-a54a-c38ddbd39ff6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6b40-79e8-96f7-1c74c80be50a" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_01a02127-6b40-7f43-a54a-c38ddbd39ff6" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6b40-79e8-96f7-1c74c80be50a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-79e8-96f7-1c74c80be50a_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-79e8-96f7-1c74c80be50a" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-79e8-96f7-1c74c80be50a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-729b-90e3-5f7e8f221a5e" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-79e8-96f7-1c74c80be50a" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-729b-90e3-5f7e8f221a5e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6b40-72e6-878b-02a93b4595c0" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-729b-90e3-5f7e8f221a5e" xlink:to="loc_gm_GmFinancialMember_01a02127-6b40-72e6-878b-02a93b4595c0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_01a02127-6b40-70e3-9d93-c94add4d9a47" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_01a02127-6b40-7f43-a54a-c38ddbd39ff6" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_01a02127-6b40-70e3-9d93-c94add4d9a47" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a02127-6b40-70e3-9d93-c94add4d9a47_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a02127-6b40-70e3-9d93-c94add4d9a47" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a02127-6b40-70e3-9d93-c94add4d9a47_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a02127-6b40-72c5-8243-c6f23001b50b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a02127-6b40-70e3-9d93-c94add4d9a47" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a02127-6b40-72c5-8243-c6f23001b50b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_01a02127-6b40-76ef-a860-86f3e87a2d5f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a02127-6b40-72c5-8243-c6f23001b50b" xlink:to="loc_us-gaap_InterestRateSwapMember_01a02127-6b40-76ef-a860-86f3e87a2d5f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_ForeignCurrencySwapsMember_01a02127-6b40-720f-9eb7-300f7277e384" xlink:href="gm-20260930.xsd#gm_ForeignCurrencySwapsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a02127-6b40-72c5-8243-c6f23001b50b" xlink:to="loc_gm_ForeignCurrencySwapsMember_01a02127-6b40-720f-9eb7-300f7277e384" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateContractMember_01a02127-6b40-7519-bd87-3f4ec9f4792f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a02127-6b40-72c5-8243-c6f23001b50b" xlink:to="loc_us-gaap_InterestRateContractMember_01a02127-6b40-7519-bd87-3f4ec9f4792f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_01a02127-6b40-7d1e-bc43-26ff1c04815a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a02127-6b40-72c5-8243-c6f23001b50b" xlink:to="loc_us-gaap_ForeignExchangeContractMember_01a02127-6b40-7d1e-bc43-26ff1c04815a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a02127-6b40-702d-8688-85c4d583ec83" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_01a02127-6b40-7f43-a54a-c38ddbd39ff6" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a02127-6b40-702d-8688-85c4d583ec83" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_01a02127-6b40-702d-8688-85c4d583ec83_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a02127-6b40-702d-8688-85c4d583ec83" xlink:to="loc_us-gaap_HedgingRelationshipDomain_01a02127-6b40-702d-8688-85c4d583ec83_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_01a02127-6b40-7750-b6d0-17ef28a1156a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a02127-6b40-702d-8688-85c4d583ec83" xlink:to="loc_us-gaap_HedgingRelationshipDomain_01a02127-6b40-7750-b6d0-17ef28a1156a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueHedgingMember_01a02127-6b40-7668-b791-576e27e601d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_01a02127-6b40-7750-b6d0-17ef28a1156a" xlink:to="loc_us-gaap_FairValueHedgingMember_01a02127-6b40-7668-b791-576e27e601d2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowHedgingMember_01a02127-6b40-72ff-8482-81b56eba61ea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashFlowHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_01a02127-6b40-7750-b6d0-17ef28a1156a" xlink:to="loc_us-gaap_CashFlowHedgingMember_01a02127-6b40-72ff-8482-81b56eba61ea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a02127-6b40-767d-a9cd-05b867290ec9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_01a02127-6b40-7f43-a54a-c38ddbd39ff6" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a02127-6b40-767d-a9cd-05b867290ec9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6b40-767d-a9cd-05b867290ec9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a02127-6b40-767d-a9cd-05b867290ec9" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6b40-767d-a9cd-05b867290ec9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6b40-71bd-be2b-f2ec07c8bea0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a02127-6b40-767d-a9cd-05b867290ec9" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6b40-71bd-be2b-f2ec07c8bea0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_01a02127-6b40-77f3-9896-16c4577e92aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a02127-6b40-71bd-be2b-f2ec07c8bea0" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_01a02127-6b40-77f3-9896-16c4577e92aa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_01a02127-6b40-70e3-883f-7ffb47feb640" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_01a02127-6b40-7f43-a54a-c38ddbd39ff6" xlink:to="loc_us-gaap_HedgingDesignationAxis_01a02127-6b40-70e3-883f-7ffb47feb640" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a02127-6b40-70e3-883f-7ffb47feb640_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a02127-6b40-70e3-883f-7ffb47feb640" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a02127-6b40-70e3-883f-7ffb47feb640_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a02127-6b40-7761-8456-8f2df66fc518" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a02127-6b40-70e3-883f-7ffb47feb640" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a02127-6b40-7761-8456-8f2df66fc518" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a02127-6b40-7836-80d4-94ceb54352ce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_01a02127-6b40-7761-8456-8f2df66fc518" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a02127-6b40-7836-80d4-94ceb54352ce" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_01a02127-6b40-7dd4-aa5a-5fd5e68354c6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_01a02127-6b40-7761-8456-8f2df66fc518" xlink:to="loc_us-gaap_NondesignatedMember_01a02127-6b40-7dd4-aa5a-5fd5e68354c6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_01a02127-6b40-70a7-ba86-254eba42feb7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a02127-6b40-7388-a4c1-fa79729f50b6" xlink:to="loc_us-gaap_DerivativeNotionalAmount_01a02127-6b40-70a7-ba86-254eba42feb7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_01a02127-6b40-776e-9a0f-b1887d712297" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a02127-6b40-7388-a4c1-fa79729f50b6" xlink:to="loc_us-gaap_DerivativeAssets_01a02127-6b40-776e-9a0f-b1887d712297" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_01a02127-6b40-721f-9be8-1a1a6dbb4f7a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a02127-6b40-7388-a4c1-fa79729f50b6" xlink:to="loc_us-gaap_DerivativeLiabilities_01a02127-6b40-721f-9be8-1a1a6dbb4f7a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnFairValueHedgesRecognizedInEarnings_01a02127-6b40-7a0b-ba21-6e09d17eebd6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossOnFairValueHedgesRecognizedInEarnings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a02127-6b40-7388-a4c1-fa79729f50b6" xlink:to="loc_us-gaap_GainLossOnFairValueHedgesRecognizedInEarnings_01a02127-6b40-7a0b-ba21-6e09d17eebd6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_01a02127-6b40-7f13-9a17-12841c301a25" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a02127-6b40-7388-a4c1-fa79729f50b6" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_01a02127-6b40-7f13-9a17-12841c301a25" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_01a02127-6b40-7c28-9793-5d34fc6d7ec7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a02127-6b40-7388-a4c1-fa79729f50b6" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_01a02127-6b40-7c28-9793-5d34fc6d7ec7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_DerivativeAssetsLiabilitiesNetFairValueAmountNotOffsetAgainstCollateral_01a02127-6b40-792b-9de8-5c04a3e51e1a" xlink:href="gm-20260930.xsd#gm_DerivativeAssetsLiabilitiesNetFairValueAmountNotOffsetAgainstCollateral"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a02127-6b40-7388-a4c1-fa79729f50b6" xlink:to="loc_gm_DerivativeAssetsLiabilitiesNetFairValueAmountNotOffsetAgainstCollateral_01a02127-6b40-792b-9de8-5c04a3e51e1a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeCollateralRightToReclaimSecurities_01a02127-6b40-7e31-b29d-3f4f8e896c75" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeCollateralRightToReclaimSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a02127-6b40-7388-a4c1-fa79729f50b6" xlink:to="loc_us-gaap_DerivativeCollateralRightToReclaimSecurities_01a02127-6b40-7e31-b29d-3f4f8e896c75" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeCollateralRightToReclaimCash_01a02127-6b40-7d2e-8321-179017496faa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeCollateralRightToReclaimCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a02127-6b40-7388-a4c1-fa79729f50b6" xlink:to="loc_us-gaap_DerivativeCollateralRightToReclaimCash_01a02127-6b40-7d2e-8321-179017496faa" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/DerivativeFinancialInstrumentsBalanceSheetLocationofGMFinancialUnsecuredDebtDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#DerivativeFinancialInstrumentsBalanceSheetLocationofGMFinancialUnsecuredDebtDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/DerivativeFinancialInstrumentsBalanceSheetLocationofGMFinancialUnsecuredDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_01a02127-6b40-790c-9278-a944dcc06a7a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativesFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_01a02127-6b40-786f-b304-7dafb99f6880" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_01a02127-6b40-790c-9278-a944dcc06a7a" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_01a02127-6b40-786f-b304-7dafb99f6880" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6b40-7b80-930a-79735d3b73bd" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_01a02127-6b40-786f-b304-7dafb99f6880" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6b40-7b80-930a-79735d3b73bd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7b80-930a-79735d3b73bd_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7b80-930a-79735d3b73bd" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7b80-930a-79735d3b73bd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-74e2-923b-d1de93d74a20" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7b80-930a-79735d3b73bd" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-74e2-923b-d1de93d74a20" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6b40-7df0-a460-e52a2345f5c7" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-74e2-923b-d1de93d74a20" xlink:to="loc_gm_GmFinancialMember_01a02127-6b40-7df0-a460-e52a2345f5c7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfFinancialPositionLocationBalanceAxis_01a02127-6b40-7795-9430-795696bc6f64" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementOfFinancialPositionLocationBalanceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_01a02127-6b40-786f-b304-7dafb99f6880" xlink:to="loc_us-gaap_StatementOfFinancialPositionLocationBalanceAxis_01a02127-6b40-7795-9430-795696bc6f64" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a02127-6b40-757b-a2df-ef1fc315d1ab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_01a02127-6b40-786f-b304-7dafb99f6880" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a02127-6b40-757b-a2df-ef1fc315d1ab" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_01a02127-6b40-757b-a2df-ef1fc315d1ab_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a02127-6b40-757b-a2df-ef1fc315d1ab" xlink:to="loc_us-gaap_HedgingRelationshipDomain_01a02127-6b40-757b-a2df-ef1fc315d1ab_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_01a02127-6b40-7972-b0d0-c37d1dce1eb7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a02127-6b40-757b-a2df-ef1fc315d1ab" xlink:to="loc_us-gaap_HedgingRelationshipDomain_01a02127-6b40-7972-b0d0-c37d1dce1eb7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueHedgingMember_01a02127-6b40-75c4-9b03-874f4d35e630" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_01a02127-6b40-7972-b0d0-c37d1dce1eb7" xlink:to="loc_us-gaap_FairValueHedgingMember_01a02127-6b40-75c4-9b03-874f4d35e630" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgedLiabilityFairValueHedge_01a02127-6b40-7e41-ad4c-c4a661faaef1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgedLiabilityFairValueHedge"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_01a02127-6b40-790c-9278-a944dcc06a7a" xlink:to="loc_us-gaap_HedgedLiabilityFairValueHedge_01a02127-6b40-7e41-ad4c-c4a661faaef1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_DerivativeLiabilitiesIncreaseDecreaseInFairValueAdjustment_01a02127-6b40-722a-b2f4-1f03dc2c6f1f" xlink:href="gm-20260930.xsd#gm_DerivativeLiabilitiesIncreaseDecreaseInFairValueAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_01a02127-6b40-790c-9278-a944dcc06a7a" xlink:to="loc_gm_DerivativeLiabilitiesIncreaseDecreaseInFairValueAdjustment_01a02127-6b40-722a-b2f4-1f03dc2c6f1f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_DerivativeLiabilitiesFairValueAdjustmentOnDiscontinuedHedgingRelationships_01a02127-6b40-7075-8d85-1fd15544f7b4" xlink:href="gm-20260930.xsd#gm_DerivativeLiabilitiesFairValueAdjustmentOnDiscontinuedHedgingRelationships"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_01a02127-6b40-790c-9278-a944dcc06a7a" xlink:to="loc_gm_DerivativeLiabilitiesFairValueAdjustmentOnDiscontinuedHedgingRelationships_01a02127-6b40-7075-8d85-1fd15544f7b4" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/DerivativeFinancialInstrumentsBalanceSheetLocationofGMFinancialUnsecuredDebtDetails_1" xlink:type="simple" xlink:href="gm-20260930.xsd#DerivativeFinancialInstrumentsBalanceSheetLocationofGMFinancialUnsecuredDebtDetails_1"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/DerivativeFinancialInstrumentsBalanceSheetLocationofGMFinancialUnsecuredDebtDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_01a02127-6b40-790c-9278-a944dcc06a7a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativesFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_01a02127-6b40-786f-b304-7dafb99f6880" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_01a02127-6b40-790c-9278-a944dcc06a7a" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_01a02127-6b40-786f-b304-7dafb99f6880" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6b40-7b80-930a-79735d3b73bd" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_01a02127-6b40-786f-b304-7dafb99f6880" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6b40-7b80-930a-79735d3b73bd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-7b80-930a-79735d3b73bd_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7b80-930a-79735d3b73bd" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-7b80-930a-79735d3b73bd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b40-74e2-923b-d1de93d74a20" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b40-7b80-930a-79735d3b73bd" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b40-74e2-923b-d1de93d74a20" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmFinancialMember_01a02127-6b40-7df0-a460-e52a2345f5c7" xlink:href="gm-20260930.xsd#gm_GmFinancialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b40-74e2-923b-d1de93d74a20" xlink:to="loc_gm_GmFinancialMember_01a02127-6b40-7df0-a460-e52a2345f5c7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a02127-6b40-757b-a2df-ef1fc315d1ab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_01a02127-6b40-786f-b304-7dafb99f6880" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a02127-6b40-757b-a2df-ef1fc315d1ab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_01a02127-6b40-757b-a2df-ef1fc315d1ab_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a02127-6b40-757b-a2df-ef1fc315d1ab" xlink:to="loc_us-gaap_HedgingRelationshipDomain_01a02127-6b40-757b-a2df-ef1fc315d1ab_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_01a02127-6b40-7972-b0d0-c37d1dce1eb7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a02127-6b40-757b-a2df-ef1fc315d1ab" xlink:to="loc_us-gaap_HedgingRelationshipDomain_01a02127-6b40-7972-b0d0-c37d1dce1eb7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueHedgingMember_01a02127-6b40-75c4-9b03-874f4d35e630" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_01a02127-6b40-7972-b0d0-c37d1dce1eb7" xlink:to="loc_us-gaap_FairValueHedgingMember_01a02127-6b40-75c4-9b03-874f4d35e630" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgedLiabilityFairValueHedge_01a02127-6b40-7e41-ad4c-c4a661faaef1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgedLiabilityFairValueHedge"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_01a02127-6b40-790c-9278-a944dcc06a7a" xlink:to="loc_us-gaap_HedgedLiabilityFairValueHedge_01a02127-6b40-7e41-ad4c-c4a661faaef1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_DerivativeLiabilitiesIncreaseDecreaseInFairValueAdjustment_01a02127-6b40-722a-b2f4-1f03dc2c6f1f" xlink:href="gm-20260930.xsd#gm_DerivativeLiabilitiesIncreaseDecreaseInFairValueAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_01a02127-6b40-790c-9278-a944dcc06a7a" xlink:to="loc_gm_DerivativeLiabilitiesIncreaseDecreaseInFairValueAdjustment_01a02127-6b40-722a-b2f4-1f03dc2c6f1f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_DerivativeLiabilitiesFairValueAdjustmentOnDiscontinuedHedgingRelationships_01a02127-6b40-7075-8d85-1fd15544f7b4" xlink:href="gm-20260930.xsd#gm_DerivativeLiabilitiesFairValueAdjustmentOnDiscontinuedHedgingRelationships"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_01a02127-6b40-790c-9278-a944dcc06a7a" xlink:to="loc_gm_DerivativeLiabilitiesFairValueAdjustmentOnDiscontinuedHedgingRelationships_01a02127-6b40-7075-8d85-1fd15544f7b4" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/PensionsandOtherPostretirementBenefitsDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#PensionsandOtherPostretirementBenefitsDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/PensionsandOtherPostretirementBenefitsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_01a02127-6b40-7771-b5dd-16d34e059368" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_01a02127-6b40-7d00-879f-cb54f3977551" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_01a02127-6b40-7771-b5dd-16d34e059368" xlink:to="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_01a02127-6b40-7d00-879f-cb54f3977551" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_01a02127-6b40-7a9f-b314-41b72d8f5013" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetirementPlanSponsorLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_01a02127-6b40-7d00-879f-cb54f3977551" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_01a02127-6b40-7a9f-b314-41b72d8f5013" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_01a02127-6b40-7a9f-b314-41b72d8f5013_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_01a02127-6b40-7a9f-b314-41b72d8f5013" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_01a02127-6b40-7a9f-b314-41b72d8f5013_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_01a02127-6b40-7fa8-8117-67de70b09cb7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_01a02127-6b40-7a9f-b314-41b72d8f5013" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_01a02127-6b40-7fa8-8117-67de70b09cb7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticPlanMember_01a02127-6b40-76c7-892f-c47c28b6d5ce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DomesticPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_01a02127-6b40-7fa8-8117-67de70b09cb7" xlink:to="loc_us-gaap_DomesticPlanMember_01a02127-6b40-76c7-892f-c47c28b6d5ce" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_01a02127-6b40-7238-9f02-cd2442b5b6fb" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DomesticPlanMember_01a02127-6b40-76c7-892f-c47c28b6d5ce" xlink:to="loc_country_US_01a02127-6b40-7238-9f02-cd2442b5b6fb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignPlanMember_01a02127-6b40-7f48-9298-14fc0104941a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_01a02127-6b40-7fa8-8117-67de70b09cb7" xlink:to="loc_us-gaap_ForeignPlanMember_01a02127-6b40-7f48-9298-14fc0104941a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_01a02127-6b40-7797-8429-2bce5660d76e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_01a02127-6b40-7d00-879f-cb54f3977551" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_01a02127-6b40-7797-8429-2bce5660d76e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_01a02127-6b40-7797-8429-2bce5660d76e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_01a02127-6b40-7797-8429-2bce5660d76e" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_01a02127-6b40-7797-8429-2bce5660d76e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_01a02127-6b40-7f95-924f-2612ca2046eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_01a02127-6b40-7797-8429-2bce5660d76e" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_01a02127-6b40-7f95-924f-2612ca2046eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_01a02127-6b40-7c13-844e-a4d4eac7f321" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_01a02127-6b40-7f95-924f-2612ca2046eb" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_01a02127-6b40-7c13-844e-a4d4eac7f321" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_01a02127-6b40-7432-adcf-b157e2796bdf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_01a02127-6b40-7f95-924f-2612ca2046eb" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_01a02127-6b40-7432-adcf-b157e2796bdf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_01a02127-6b40-759a-88aa-2cede4579308" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanServiceCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_01a02127-6b40-7771-b5dd-16d34e059368" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_01a02127-6b40-759a-88aa-2cede4579308" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_01a02127-6b40-7395-97cd-4ba674ff84ff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_01a02127-6b40-7771-b5dd-16d34e059368" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_01a02127-6b40-7395-97cd-4ba674ff84ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_01a02127-6b40-72cf-81c9-cd74d465c366" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_01a02127-6b40-7771-b5dd-16d34e059368" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_01a02127-6b40-72cf-81c9-cd74d465c366" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_01a02127-6b40-7225-a612-bf49e8470add" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_01a02127-6b40-7771-b5dd-16d34e059368" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_01a02127-6b40-7225-a612-bf49e8470add" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_01a02127-6b40-70e2-9f22-2f838c9cd677" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_01a02127-6b40-7771-b5dd-16d34e059368" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_01a02127-6b40-70e2-9f22-2f838c9cd677" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_01a02127-6b40-79d7-a436-6dda73cf012f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_01a02127-6b40-7771-b5dd-16d34e059368" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_01a02127-6b40-79d7-a436-6dda73cf012f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_DefinedBenefitPlanNetPeriodicBenefitExpenseIncomeExcludingServiceCost_01a02127-6b40-7c80-a3f6-6726654c2c84" xlink:href="gm-20260930.xsd#gm_DefinedBenefitPlanNetPeriodicBenefitExpenseIncomeExcludingServiceCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_01a02127-6b40-7771-b5dd-16d34e059368" xlink:to="loc_gm_DefinedBenefitPlanNetPeriodicBenefitExpenseIncomeExcludingServiceCost_01a02127-6b40-7c80-a3f6-6726654c2c84" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/CommitmentsContingenciesandUncertaintiesDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#CommitmentsContingenciesandUncertaintiesDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/CommitmentsContingenciesandUncertaintiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesLineItems_01a02127-6b40-77d2-a4c3-e6cd9bd5d95f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingenciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesTable_01a02127-6b40-7da3-ac3e-b5dcec6d7445" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingenciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_01a02127-6b40-77d2-a4c3-e6cd9bd5d95f" xlink:to="loc_us-gaap_LossContingenciesTable_01a02127-6b40-7da3-ac3e-b5dcec6d7445" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseAxis_01a060af-adda-7615-b0d6-a634c9ca1e97" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_LitigationCaseAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_01a02127-6b40-7da3-ac3e-b5dcec6d7445" xlink:to="loc_srt_LitigationCaseAxis_01a060af-adda-7615-b0d6-a634c9ca1e97" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_01a060af-adda-7615-b0d6-a634c9ca1e97_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_LitigationCaseAxis_01a060af-adda-7615-b0d6-a634c9ca1e97" xlink:to="loc_srt_LitigationCaseTypeDomain_01a060af-adda-7615-b0d6-a634c9ca1e97_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_01a060af-adda-78e5-bdb1-283642344966" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_LitigationCaseAxis_01a060af-adda-7615-b0d6-a634c9ca1e97" xlink:to="loc_srt_LitigationCaseTypeDomain_01a060af-adda-78e5-bdb1-283642344966" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_ForeignEmissionsStandardsMember_01a060af-adda-718b-8d44-fe5e53b8ca9a" xlink:href="gm-20260930.xsd#gm_ForeignEmissionsStandardsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_01a060af-adda-78e5-bdb1-283642344966" xlink:to="loc_gm_ForeignEmissionsStandardsMember_01a060af-adda-718b-8d44-fe5e53b8ca9a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_Faulty8SpeedTransmissionsMember_01a060af-adda-70cd-97ec-c0997e46f84d" xlink:href="gm-20260930.xsd#gm_Faulty8SpeedTransmissionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_01a060af-adda-78e5-bdb1-283642344966" xlink:to="loc_gm_Faulty8SpeedTransmissionsMember_01a060af-adda-70cd-97ec-c0997e46f84d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_ModelYear20152019VehiclesMember_01a060af-adda-7434-b217-858528018687" xlink:href="gm-20260930.xsd#gm_ModelYear20152019VehiclesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_01a060af-adda-78e5-bdb1-283642344966" xlink:to="loc_gm_ModelYear20152019VehiclesMember_01a060af-adda-7434-b217-858528018687" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_TakataPassengerSideAirbagsMember_01a060af-adda-7eb5-9d1d-b4e462d2ae3a" xlink:href="gm-20260930.xsd#gm_TakataPassengerSideAirbagsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_01a060af-adda-78e5-bdb1-283642344966" xlink:to="loc_gm_TakataPassengerSideAirbagsMember_01a060af-adda-7eb5-9d1d-b4e462d2ae3a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_01a060af-adda-7dea-9f3f-63ddd79fd74a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_01a02127-6b40-7da3-ac3e-b5dcec6d7445" xlink:to="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_01a060af-adda-7dea-9f3f-63ddd79fd74a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_01a060af-adda-7dea-9f3f-63ddd79fd74a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_01a060af-adda-7dea-9f3f-63ddd79fd74a" xlink:to="loc_us-gaap_LossContingencyNatureDomain_01a060af-adda-7dea-9f3f-63ddd79fd74a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_01a060af-adda-7709-8d95-c38a83981ea4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_01a060af-adda-7dea-9f3f-63ddd79fd74a" xlink:to="loc_us-gaap_LossContingencyNatureDomain_01a060af-adda-7709-8d95-c38a83981ea4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_TakataPassengerSideAirbagsMember_01a060af-adda-7c14-ab72-df1aee1736f3" xlink:href="gm-20260930.xsd#gm_TakataPassengerSideAirbagsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_01a060af-adda-7709-8d95-c38a83981ea4" xlink:to="loc_gm_TakataPassengerSideAirbagsMember_01a060af-adda-7c14-ab72-df1aee1736f3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_ARCMattersMember_01a060af-dfcf-74f4-9090-4f19ae1d4df9" xlink:href="gm-20260930.xsd#gm_ARCMattersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_01a060af-adda-7709-8d95-c38a83981ea4" xlink:to="loc_gm_ARCMattersMember_01a060af-dfcf-74f4-9090-4f19ae1d4df9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_PrivacyAndConsumerProtectionMattersMember_01a060af-dfcf-7ae9-9f8c-a0229988180c" xlink:href="gm-20260930.xsd#gm_PrivacyAndConsumerProtectionMattersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_01a060af-adda-7709-8d95-c38a83981ea4" xlink:to="loc_gm_PrivacyAndConsumerProtectionMattersMember_01a060af-dfcf-7ae9-9f8c-a0229988180c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_IndirectTaxRelatedMattersMember_01a060b0-ff43-75c3-ae3c-071d3f63af4f" xlink:href="gm-20260930.xsd#gm_IndirectTaxRelatedMattersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_01a060af-adda-7709-8d95-c38a83981ea4" xlink:to="loc_gm_IndirectTaxRelatedMattersMember_01a060b0-ff43-75c3-ae3c-071d3f63af4f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationReserve_01a060af-7c31-7905-b90a-26e02fb4e9c4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LitigationReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_01a02127-6b40-77d2-a4c3-e6cd9bd5d95f" xlink:to="loc_us-gaap_LitigationReserve_01a060af-7c31-7905-b90a-26e02fb4e9c4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyPendingClaimsNumber_01a060af-adda-7e76-9313-a87e31b34431" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyPendingClaimsNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_01a02127-6b40-77d2-a4c3-e6cd9bd5d95f" xlink:to="loc_us-gaap_LossContingencyPendingClaimsNumber_01a060af-adda-7e76-9313-a87e31b34431" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_NumberOfPutativeClassActionsPending_01a060af-adda-7d0a-a8b8-87c0541769c6" xlink:href="gm-20260930.xsd#gm_NumberOfPutativeClassActionsPending"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_01a02127-6b40-77d2-a4c3-e6cd9bd5d95f" xlink:to="loc_gm_NumberOfPutativeClassActionsPending_01a060af-adda-7d0a-a8b8-87c0541769c6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_NumberOfCertifiedClassActionsPending_01a060af-adda-7d88-9b53-e1e128a12f39" xlink:href="gm-20260930.xsd#gm_NumberOfCertifiedClassActionsPending"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_01a02127-6b40-77d2-a4c3-e6cd9bd5d95f" xlink:to="loc_gm_NumberOfCertifiedClassActionsPending_01a060af-adda-7d88-9b53-e1e128a12f39" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_NumberOfCertifiedStateSubclasses_01a060af-adda-7c2c-a3d9-6e0fd71f13e1" xlink:href="gm-20260930.xsd#gm_NumberOfCertifiedStateSubclasses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_01a02127-6b40-77d2-a4c3-e6cd9bd5d95f" xlink:to="loc_gm_NumberOfCertifiedStateSubclasses_01a060af-adda-7c2c-a3d9-6e0fd71f13e1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_NumberOfDecertifiedStateSubclasses_01a060af-adda-7d00-8977-6f640d938fc4" xlink:href="gm-20260930.xsd#gm_NumberOfDecertifiedStateSubclasses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_01a02127-6b40-77d2-a4c3-e6cd9bd5d95f" xlink:to="loc_gm_NumberOfDecertifiedStateSubclasses_01a060af-adda-7d00-8977-6f640d938fc4" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StandardProductWarrantyAccrualPeriodIncreaseDecrease_01a060af-adda-731c-95f9-40676c6a735d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StandardProductWarrantyAccrualPeriodIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_01a02127-6b40-77d2-a4c3-e6cd9bd5d95f" xlink:to="loc_us-gaap_StandardProductWarrantyAccrualPeriodIncreaseDecrease_01a060af-adda-731c-95f9-40676c6a735d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualAtCarryingValue_01a060af-adda-78c4-b586-31214cd9a1d6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyAccrualAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_01a02127-6b40-77d2-a4c3-e6cd9bd5d95f" xlink:to="loc_us-gaap_LossContingencyAccrualAtCarryingValue_01a060af-adda-78c4-b586-31214cd9a1d6" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_NumberOfVehiclesRecalled_01a060af-dfcf-71d9-b763-e5fbd38449b8" xlink:href="gm-20260930.xsd#gm_NumberOfVehiclesRecalled"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_01a02127-6b40-77d2-a4c3-e6cd9bd5d95f" xlink:to="loc_gm_NumberOfVehiclesRecalled_01a060af-dfcf-71d9-b763-e5fbd38449b8" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_NumberOfDefectiveAirbagInflators_01a060af-dfcf-7987-9682-ee5e95100a84" xlink:href="gm-20260930.xsd#gm_NumberOfDefectiveAirbagInflators"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_01a02127-6b40-77d2-a4c3-e6cd9bd5d95f" xlink:to="loc_gm_NumberOfDefectiveAirbagInflators_01a060af-dfcf-7987-9682-ee5e95100a84" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_PeriodOfDefectiveAirbagInflators_01a060af-dfcf-7638-9579-e7449a46490e" xlink:href="gm-20260930.xsd#gm_PeriodOfDefectiveAirbagInflators"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_01a02127-6b40-77d2-a4c3-e6cd9bd5d95f" xlink:to="loc_gm_PeriodOfDefectiveAirbagInflators_01a060af-dfcf-7638-9579-e7449a46490e" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_NumberOfArbitrations_01a14372-56e2-7bc8-a6e2-4ce3d77ccf0d" xlink:href="gm-20260930.xsd#gm_NumberOfArbitrations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_01a02127-6b40-77d2-a4c3-e6cd9bd5d95f" xlink:to="loc_gm_NumberOfArbitrations_01a14372-56e2-7bc8-a6e2-4ce3d77ccf0d" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsMaximumExposure_01a060b0-e13b-7f80-a3bc-c1be8689426e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GuaranteeObligationsMaximumExposure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_01a02127-6b40-77d2-a4c3-e6cd9bd5d95f" xlink:to="loc_us-gaap_GuaranteeObligationsMaximumExposure_01a060b0-e13b-7f80-a3bc-c1be8689426e" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplierFinanceProgramObligation_01a060b0-ff43-7cab-926d-969ba6a24777" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SupplierFinanceProgramObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_01a02127-6b40-77d2-a4c3-e6cd9bd5d95f" xlink:to="loc_us-gaap_SupplierFinanceProgramObligation_01a060b0-ff43-7cab-926d-969ba6a24777" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplierFinanceProgramObligationStatementOfFinancialPositionExtensibleEnumeration_01a060b0-ff43-7a45-b1ca-48b51070712c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SupplierFinanceProgramObligationStatementOfFinancialPositionExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_01a02127-6b40-77d2-a4c3-e6cd9bd5d95f" xlink:to="loc_us-gaap_SupplierFinanceProgramObligationStatementOfFinancialPositionExtensibleEnumeration_01a060b0-ff43-7a45-b1ca-48b51070712c" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyRangeOfPossibleLossPortionNotAccrued_01a060b0-ff43-7138-b0f1-618af4a23c41" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyRangeOfPossibleLossPortionNotAccrued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_01a02127-6b40-77d2-a4c3-e6cd9bd5d95f" xlink:to="loc_us-gaap_LossContingencyRangeOfPossibleLossPortionNotAccrued_01a060b0-ff43-7138-b0f1-618af4a23c41" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_EmissionComplianceRelatedCosts_01a060b1-2df3-77db-a33e-75107c5f3e18" xlink:href="gm-20260930.xsd#gm_EmissionComplianceRelatedCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_01a02127-6b40-77d2-a4c3-e6cd9bd5d95f" xlink:to="loc_gm_EmissionComplianceRelatedCosts_01a060b1-2df3-77db-a33e-75107c5f3e18" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_EmissionRelatedAcquiredCreditsSubjectToImpairment_01a060b1-2df3-7d22-a7b3-d0c07d4049a9" xlink:href="gm-20260930.xsd#gm_EmissionRelatedAcquiredCreditsSubjectToImpairment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_01a02127-6b40-77d2-a4c3-e6cd9bd5d95f" xlink:to="loc_gm_EmissionRelatedAcquiredCreditsSubjectToImpairment_01a060b1-2df3-7d22-a7b3-d0c07d4049a9" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_CarryingAmountOfEmissionRelatedAcquiredCredits_01a060b1-2df3-7b4c-98ae-7c18f16ad915" xlink:href="gm-20260930.xsd#gm_CarryingAmountOfEmissionRelatedAcquiredCredits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_01a02127-6b40-77d2-a4c3-e6cd9bd5d95f" xlink:to="loc_gm_CarryingAmountOfEmissionRelatedAcquiredCredits_01a060b1-2df3-7b4c-98ae-7c18f16ad915" xlink:type="arc" order="18"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/RestructuringandOtherInitiativesNarrativeDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#RestructuringandOtherInitiativesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/RestructuringandOtherInitiativesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_01a02127-6b41-7660-a7aa-8c41b4689f89" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a02127-6b41-720e-8340-8b87d980d254" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a02127-6b41-7660-a7aa-8c41b4689f89" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a02127-6b41-720e-8340-8b87d980d254" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_01a060c0-5fa3-7395-9fe7-760e13e26603" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a02127-6b41-720e-8340-8b87d980d254" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_01a060c0-5fa3-7395-9fe7-760e13e26603" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a060c0-5fa3-7395-9fe7-760e13e26603_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a060c0-5fa3-7395-9fe7-760e13e26603" xlink:to="loc_us-gaap_SegmentDomain_01a060c0-5fa3-7395-9fe7-760e13e26603_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a060c0-5fa3-78ed-a2e9-7bba7b90d432" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a060c0-5fa3-7395-9fe7-760e13e26603" xlink:to="loc_us-gaap_SegmentDomain_01a060c0-5fa3-78ed-a2e9-7bba7b90d432" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmnaMember_01a060c0-5fa3-7ac2-a789-97abd2ecfd5b" xlink:href="gm-20260930.xsd#gm_GmnaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a060c0-5fa3-78ed-a2e9-7bba7b90d432" xlink:to="loc_gm_GmnaMember_01a060c0-5fa3-7ac2-a789-97abd2ecfd5b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_01a060c0-5fa3-793b-a63b-7bfe983f4e43" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a02127-6b41-720e-8340-8b87d980d254" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_01a060c0-5fa3-793b-a63b-7bfe983f4e43" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_01a060c0-5fa3-793b-a63b-7bfe983f4e43_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_01a060c0-5fa3-793b-a63b-7bfe983f4e43" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_01a060c0-5fa3-793b-a63b-7bfe983f4e43_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_01a060c0-5fa3-7923-9c32-8774c5b39f88" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_01a060c0-5fa3-793b-a63b-7bfe983f4e43" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_01a060c0-5fa3-7923-9c32-8774c5b39f88" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_ImpairmentAndOtherChargesMember_01a060c0-5fa3-7c7f-bc0f-3a55bc74b8da" xlink:href="gm-20260930.xsd#gm_ImpairmentAndOtherChargesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_01a060c0-5fa3-7923-9c32-8774c5b39f88" xlink:to="loc_gm_ImpairmentAndOtherChargesMember_01a060c0-5fa3-7c7f-bc0f-3a55bc74b8da" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractTerminationMember_01a060c0-5fa3-7bb0-8f3b-a0dfa02ca9fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractTerminationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_01a060c0-5fa3-7923-9c32-8774c5b39f88" xlink:to="loc_us-gaap_ContractTerminationMember_01a060c0-5fa3-7bb0-8f3b-a0dfa02ca9fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_EVRelatedWriteDownMember_01a060c0-5fa3-7bb8-bb50-bce376df57ab" xlink:href="gm-20260930.xsd#gm_EVRelatedWriteDownMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_01a060c0-5fa3-7923-9c32-8774c5b39f88" xlink:to="loc_gm_EVRelatedWriteDownMember_01a060c0-5fa3-7bb8-bb50-bce376df57ab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_AdditionalNetRestructuringChargesMember_01a060c0-5fa3-7b5a-941e-c8ddf0679adb" xlink:href="gm-20260930.xsd#gm_AdditionalNetRestructuringChargesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_01a060c0-5fa3-7923-9c32-8774c5b39f88" xlink:to="loc_gm_AdditionalNetRestructuringChargesMember_01a060c0-5fa3-7b5a-941e-c8ddf0679adb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_OngoingCommercialNegotiationsMember_01a060c0-5fa3-71c6-9cb8-8809de1c932b" xlink:href="gm-20260930.xsd#gm_OngoingCommercialNegotiationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_AdditionalNetRestructuringChargesMember_01a060c0-5fa3-7b5a-941e-c8ddf0679adb" xlink:to="loc_gm_OngoingCommercialNegotiationsMember_01a060c0-5fa3-71c6-9cb8-8809de1c932b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_LossesOnSupplyAgreementsMember_01a060c0-5fa3-7086-8cec-ff5e2564f1ca" xlink:href="gm-20260930.xsd#gm_LossesOnSupplyAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_AdditionalNetRestructuringChargesMember_01a060c0-5fa3-7b5a-941e-c8ddf0679adb" xlink:to="loc_gm_LossesOnSupplyAgreementsMember_01a060c0-5fa3-7086-8cec-ff5e2564f1ca" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_ImpairedEmissionsCreditsMember_01a060c0-5fa3-7b72-a9bf-56ed69516ae4" xlink:href="gm-20260930.xsd#gm_ImpairedEmissionsCreditsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_AdditionalNetRestructuringChargesMember_01a060c0-5fa3-7b5a-941e-c8ddf0679adb" xlink:to="loc_gm_ImpairedEmissionsCreditsMember_01a060c0-5fa3-7b72-a9bf-56ed69516ae4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_01a060c0-5fa3-77e9-9827-db520061a89f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a02127-6b41-7660-a7aa-8c41b4689f89" xlink:to="loc_us-gaap_RestructuringCharges_01a060c0-5fa3-77e9-9827-db520061a89f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRestructuring_01a060c0-5fa3-745f-8c88-78343d116056" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForRestructuring"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a02127-6b41-7660-a7aa-8c41b4689f89" xlink:to="loc_us-gaap_PaymentsForRestructuring_01a060c0-5fa3-745f-8c88-78343d116056" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_RestructuringRecoveries_01a060c0-5fa3-7b80-b7df-8dd80419e42d" xlink:href="gm-20260930.xsd#gm_RestructuringRecoveries"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a02127-6b41-7660-a7aa-8c41b4689f89" xlink:to="loc_gm_RestructuringRecoveries_01a060c0-5fa3-7b80-b7df-8dd80419e42d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_RestructuringChargesExpectedFutureCashOutflows_01a060c0-5fa3-77eb-ba92-8c8957afb1b9" xlink:href="gm-20260930.xsd#gm_RestructuringChargesExpectedFutureCashOutflows"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a02127-6b41-7660-a7aa-8c41b4689f89" xlink:to="loc_gm_RestructuringChargesExpectedFutureCashOutflows_01a060c0-5fa3-77eb-ba92-8c8957afb1b9" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/StockholdersEquityandNoncontrollingInterestsNarrativeDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#StockholdersEquityandNoncontrollingInterestsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/StockholdersEquityandNoncontrollingInterestsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_01a02127-6b41-7063-90b2-da13228c79c3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_01a02127-6b41-7638-a1d0-9bb0eee104ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfStockByClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a02127-6b41-7063-90b2-da13228c79c3" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_01a02127-6b41-7638-a1d0-9bb0eee104ed" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ShareRepurchaseProgramAxis_01a0ae9e-7e9a-7cf7-acfb-fe0d82595550" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ShareRepurchaseProgramAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_01a02127-6b41-7638-a1d0-9bb0eee104ed" xlink:to="loc_srt_ShareRepurchaseProgramAxis_01a0ae9e-7e9a-7cf7-acfb-fe0d82595550" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ShareRepurchaseProgramDomain_01a0ae9e-7e9a-7cf7-acfb-fe0d82595550_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ShareRepurchaseProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ShareRepurchaseProgramAxis_01a0ae9e-7e9a-7cf7-acfb-fe0d82595550" xlink:to="loc_srt_ShareRepurchaseProgramDomain_01a0ae9e-7e9a-7cf7-acfb-fe0d82595550_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ShareRepurchaseProgramDomain_01a0ae9e-7e9a-7c4c-bfec-aa346e1c5c48" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ShareRepurchaseProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ShareRepurchaseProgramAxis_01a0ae9e-7e9a-7cf7-acfb-fe0d82595550" xlink:to="loc_srt_ShareRepurchaseProgramDomain_01a0ae9e-7e9a-7c4c-bfec-aa346e1c5c48" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_CommonStockRepurchaseProgramMember_01a0ae9e-7e9a-7451-93da-db29cee243c7" xlink:href="gm-20260930.xsd#gm_CommonStockRepurchaseProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ShareRepurchaseProgramDomain_01a0ae9e-7e9a-7c4c-bfec-aa346e1c5c48" xlink:to="loc_gm_CommonStockRepurchaseProgramMember_01a0ae9e-7e9a-7451-93da-db29cee243c7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_AcceleratedShareRepurchaseMember_01a0ae9e-7e9a-75db-a2ab-757aeb38651a" xlink:href="gm-20260930.xsd#gm_AcceleratedShareRepurchaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ShareRepurchaseProgramDomain_01a0ae9e-7e9a-7c4c-bfec-aa346e1c5c48" xlink:to="loc_gm_AcceleratedShareRepurchaseMember_01a0ae9e-7e9a-75db-a2ab-757aeb38651a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_01a1109c-6199-7786-bbc8-00417c44dd93" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_01a02127-6b41-7638-a1d0-9bb0eee104ed" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_01a1109c-6199-7786-bbc8-00417c44dd93" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_01a1109c-6199-7786-bbc8-00417c44dd93_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_01a1109c-6199-7786-bbc8-00417c44dd93" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_01a1109c-6199-7786-bbc8-00417c44dd93_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_01a1109c-6199-7724-aa69-0a78e2ac9bb7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_01a1109c-6199-7786-bbc8-00417c44dd93" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_01a1109c-6199-7724-aa69-0a78e2ac9bb7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_01a1109c-d3f6-7c78-81c3-859b5945944e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_01a1109c-6199-7724-aa69-0a78e2ac9bb7" xlink:to="loc_us-gaap_SubsequentEventMember_01a1109c-d3f6-7c78-81c3-859b5945944e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_01a0ae9e-7e9a-7e2a-94d2-2e301ffb3ef3" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_01a02127-6b41-7638-a1d0-9bb0eee104ed" xlink:to="loc_dei_LegalEntityAxis_01a0ae9e-7e9a-7e2a-94d2-2e301ffb3ef3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a0ae9e-7e9a-7e2a-94d2-2e301ffb3ef3_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_01a0ae9e-7e9a-7e2a-94d2-2e301ffb3ef3" xlink:to="loc_dei_EntityDomain_01a0ae9e-7e9a-7e2a-94d2-2e301ffb3ef3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a0ae9e-7e9a-74c3-8385-0ddb4873fee8" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_01a0ae9e-7e9a-7e2a-94d2-2e301ffb3ef3" xlink:to="loc_dei_EntityDomain_01a0ae9e-7e9a-74c3-8385-0ddb4873fee8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GMCruiseHoldingsLLCMember_01a0ae9e-7e9a-7e60-aa19-0e4361721511" xlink:href="gm-20260930.xsd#gm_GMCruiseHoldingsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_01a0ae9e-7e9a-74c3-8385-0ddb4873fee8" xlink:to="loc_gm_GMCruiseHoldingsLLCMember_01a0ae9e-7e9a-7e60-aa19-0e4361721511" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_01a0ae9e-7e9a-758e-a4bd-e77c8911a8b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_01a02127-6b41-7638-a1d0-9bb0eee104ed" xlink:to="loc_us-gaap_StatementClassOfStockAxis_01a0ae9e-7e9a-758e-a4bd-e77c8911a8b6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a0ae9e-7e9a-758e-a4bd-e77c8911a8b6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a0ae9e-7e9a-758e-a4bd-e77c8911a8b6" xlink:to="loc_us-gaap_ClassOfStockDomain_01a0ae9e-7e9a-758e-a4bd-e77c8911a8b6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a0ae9e-7e9a-71e2-8a01-5373462f93ec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a0ae9e-7e9a-758e-a4bd-e77c8911a8b6" xlink:to="loc_us-gaap_ClassOfStockDomain_01a0ae9e-7e9a-71e2-8a01-5373462f93ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_CruisePreferredSharesMember_01a0ae9e-7e9a-7ca0-851d-279f973ee6e1" xlink:href="gm-20260930.xsd#gm_CruisePreferredSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a0ae9e-7e9a-71e2-8a01-5373462f93ec" xlink:to="loc_gm_CruisePreferredSharesMember_01a0ae9e-7e9a-7ca0-851d-279f973ee6e1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_01a0ae9e-7e9a-7fef-86a7-40cab5a8fbc6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a02127-6b41-7063-90b2-da13228c79c3" xlink:to="loc_us-gaap_PreferredStockSharesAuthorized_01a0ae9e-7e9a-7fef-86a7-40cab5a8fbc6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_01a0ae9e-7e9a-7d1a-b689-23ba0f67b2e3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a02127-6b41-7063-90b2-da13228c79c3" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_01a0ae9e-7e9a-7d1a-b689-23ba0f67b2e3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesIssued_01a0ae9e-7e9a-7897-b2af-3bb5c68d9c12" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a02127-6b41-7063-90b2-da13228c79c3" xlink:to="loc_us-gaap_PreferredStockSharesIssued_01a0ae9e-7e9a-7897-b2af-3bb5c68d9c12" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_01a0ae9e-7e9a-7ea5-a690-6b2d93f64df0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a02127-6b41-7063-90b2-da13228c79c3" xlink:to="loc_us-gaap_PreferredStockSharesOutstanding_01a0ae9e-7e9a-7ea5-a690-6b2d93f64df0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_01a0ae9e-7e9a-7c93-b595-15110fc91dcd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a02127-6b41-7063-90b2-da13228c79c3" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_01a0ae9e-7e9a-7c93-b595-15110fc91dcd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_01a0ae9e-7e9a-72b9-ac50-aa708fc223ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a02127-6b41-7063-90b2-da13228c79c3" xlink:to="loc_us-gaap_CommonStockSharesIssued_01a0ae9e-7e9a-72b9-ac50-aa708fc223ca" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_01a0ae9e-7e9a-7a9d-9404-a01467c03dd7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockDividendsPerShareDeclared"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a02127-6b41-7063-90b2-da13228c79c3" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_01a0ae9e-7e9a-7a9d-9404-a01467c03dd7" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStockCash_01a0ae9e-7e9a-77f0-8b69-335da9a996e2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendsCommonStockCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a02127-6b41-7063-90b2-da13228c79c3" xlink:to="loc_us-gaap_DividendsCommonStockCash_01a0ae9e-7e9a-77f0-8b69-335da9a996e2" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_StockRepurchaseProgramIncreaseInAuthorizedAmount_01a0ae9e-7e9a-7418-9813-082ec7c288d2" xlink:href="gm-20260930.xsd#gm_StockRepurchaseProgramIncreaseInAuthorizedAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a02127-6b41-7063-90b2-da13228c79c3" xlink:to="loc_gm_StockRepurchaseProgramIncreaseInAuthorizedAmount_01a0ae9e-7e9a-7418-9813-082ec7c288d2" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_01a0ae9e-7e9a-7eb0-83df-905376895a78" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a02127-6b41-7063-90b2-da13228c79c3" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_01a0ae9e-7e9a-7eb0-83df-905376895a78" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StockRepurchaseProgramAuthorizedAmount1_01a0ae9e-7e9a-7cd7-8e1a-072d2680b32d" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StockRepurchaseProgramAuthorizedAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a02127-6b41-7063-90b2-da13228c79c3" xlink:to="loc_srt_StockRepurchaseProgramAuthorizedAmount1_01a0ae9e-7e9a-7cd7-8e1a-072d2680b32d" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_01a0ae9e-7e9a-7e2f-9d45-a1a5243eb9ac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a02127-6b41-7063-90b2-da13228c79c3" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_01a0ae9e-7e9a-7e2f-9d45-a1a5243eb9ac" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_NetIncomeLossAvailableToStockholdersAndTransfersToNoncontrollingInterests_01a0ae9e-7e9a-7a6d-befe-6cf686df2663" xlink:href="gm-20260930.xsd#gm_NetIncomeLossAvailableToStockholdersAndTransfersToNoncontrollingInterests"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a02127-6b41-7063-90b2-da13228c79c3" xlink:to="loc_gm_NetIncomeLossAvailableToStockholdersAndTransfersToNoncontrollingInterests_01a0ae9e-7e9a-7a6d-befe-6cf686df2663" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockRedemptionPremium_01a0ae9e-7e9a-740e-974e-b3e85b1abf65" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockRedemptionPremium"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a02127-6b41-7063-90b2-da13228c79c3" xlink:to="loc_us-gaap_PreferredStockRedemptionPremium_01a0ae9e-7e9a-740e-974e-b3e85b1abf65" xlink:type="arc" order="13"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/StockholdersEquityandNoncontrollingInterestsAccumulatedOtherComprehensiveLossDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#StockholdersEquityandNoncontrollingInterestsAccumulatedOtherComprehensiveLossDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/StockholdersEquityandNoncontrollingInterestsAccumulatedOtherComprehensiveLossDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a02127-6b41-7eb0-9f4b-8a9005bbc6c2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_01a02127-6b41-7853-b096-d1098989cbcf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a02127-6b41-7eb0-9f4b-8a9005bbc6c2" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_01a02127-6b41-7853-b096-d1098989cbcf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_01a02127-6b41-7a1a-bfeb-ac0c4725bd64" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_01a02127-6b41-7853-b096-d1098989cbcf" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_01a02127-6b41-7a1a-bfeb-ac0c4725bd64" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a02127-6b41-7a1a-bfeb-ac0c4725bd64_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a02127-6b41-7a1a-bfeb-ac0c4725bd64" xlink:to="loc_us-gaap_EquityComponentDomain_01a02127-6b41-7a1a-bfeb-ac0c4725bd64_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a02127-6b41-707f-a9c4-7523fe7afff3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a02127-6b41-7a1a-bfeb-ac0c4725bd64" xlink:to="loc_us-gaap_EquityComponentDomain_01a02127-6b41-707f-a9c4-7523fe7afff3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_01a02127-6b41-79e2-b7e3-20eb5ee58d63" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedTranslationAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a02127-6b41-707f-a9c4-7523fe7afff3" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_01a02127-6b41-79e2-b7e3-20eb5ee58d63" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_01a02127-6b41-7a78-903a-6e32681062a0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a02127-6b41-707f-a9c4-7523fe7afff3" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_01a02127-6b41-7a78-903a-6e32681062a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_01a02127-6b41-7749-9b69-910cfe1719e5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a02127-6b41-707f-a9c4-7523fe7afff3" xlink:to="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_01a02127-6b41-7749-9b69-910cfe1719e5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_01a02127-6b41-7b06-abf1-42e46b6f0cfd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a02127-6b41-7eb0-9f4b-8a9005bbc6c2" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_01a02127-6b41-7b06-abf1-42e46b6f0cfd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a02127-6b41-74a4-9928-a9d50c32970a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_01a02127-6b41-7b06-abf1-42e46b6f0cfd" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a02127-6b41-74a4-9928-a9d50c32970a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_01a02127-6b41-76fc-862e-3b5fc22d7ad5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_01a02127-6b41-7b06-abf1-42e46b6f0cfd" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_01a02127-6b41-76fc-862e-3b5fc22d7ad5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_01a02127-6b41-707f-b1dd-87bfb49e5b70" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_01a02127-6b41-7b06-abf1-42e46b6f0cfd" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_01a02127-6b41-707f-b1dd-87bfb49e5b70" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_01a02127-6b41-7acf-9866-8f8722c7e71d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_01a02127-6b41-7b06-abf1-42e46b6f0cfd" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_01a02127-6b41-7acf-9866-8f8722c7e71d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a02127-6b41-7a91-abfc-38caf488d48b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/EarningsPerShareDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#EarningsPerShareDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/EarningsPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasicLineItems_01a02127-6b41-74f0-9ecd-439fd07259c4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasicLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_01a02127-6b41-7fb5-9a0a-17a400945f6f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_01a02127-6b41-74f0-9ecd-439fd07259c4" xlink:to="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_01a02127-6b41-7fb5-9a0a-17a400945f6f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_01a02127-6b41-7965-83ee-3197f9de879e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_01a02127-6b41-7fb5-9a0a-17a400945f6f" xlink:to="loc_us-gaap_StatementClassOfStockAxis_01a02127-6b41-7965-83ee-3197f9de879e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a02127-6b41-7965-83ee-3197f9de879e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a02127-6b41-7965-83ee-3197f9de879e" xlink:to="loc_us-gaap_ClassOfStockDomain_01a02127-6b41-7965-83ee-3197f9de879e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a02127-6b41-7968-9e7c-c8498c841d83" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a02127-6b41-7965-83ee-3197f9de879e" xlink:to="loc_us-gaap_ClassOfStockDomain_01a02127-6b41-7968-9e7c-c8498c841d83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_CruisePreferredSharesMember_01a02127-6b41-734f-bc03-add816e93cf7" xlink:href="gm-20260930.xsd#gm_CruisePreferredSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a02127-6b41-7968-9e7c-c8498c841d83" xlink:to="loc_gm_CruisePreferredSharesMember_01a02127-6b41-734f-bc03-add816e93cf7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasicAbstract_01a02127-6b41-770e-a1dd-32251e0b6144" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasicAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_01a02127-6b41-74f0-9ecd-439fd07259c4" xlink:to="loc_us-gaap_EarningsPerShareBasicAbstract_01a02127-6b41-770e-a1dd-32251e0b6144" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_01a02127-6b41-7cea-a5c8-e285a893fbe9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_01a02127-6b41-770e-a1dd-32251e0b6144" xlink:to="loc_us-gaap_NetIncomeLoss_01a02127-6b41-7cea-a5c8-e285a893fbe9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockDividendsAndOtherAdjustments_01a02127-6b41-7a78-a5d4-ad6b3bdfb14e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockDividendsAndOtherAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_01a02127-6b41-770e-a1dd-32251e0b6144" xlink:to="loc_us-gaap_PreferredStockDividendsAndOtherAdjustments_01a02127-6b41-7a78-a5d4-ad6b3bdfb14e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_01a02127-6b41-7ec5-af52-efbdab830805" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_01a02127-6b41-770e-a1dd-32251e0b6144" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_01a02127-6b41-7ec5-af52-efbdab830805" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_01a02127-6b41-7acb-95bd-2a27617eb14d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_01a02127-6b41-770e-a1dd-32251e0b6144" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_01a02127-6b41-7acb-95bd-2a27617eb14d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_01a02127-6b41-7040-a53c-9a4745f9218d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_01a02127-6b41-770e-a1dd-32251e0b6144" xlink:to="loc_us-gaap_EarningsPerShareBasic_01a02127-6b41-7040-a53c-9a4745f9218d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDilutedAbstract_01a02127-6b41-745b-bd36-829b47bc8f6a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDilutedAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_01a02127-6b41-74f0-9ecd-439fd07259c4" xlink:to="loc_us-gaap_EarningsPerShareDilutedAbstract_01a02127-6b41-745b-bd36-829b47bc8f6a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_01a02127-6b41-763c-ab5e-d61854ee0477" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_01a02127-6b41-745b-bd36-829b47bc8f6a" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_01a02127-6b41-763c-ab5e-d61854ee0477" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_01a02127-6b41-7acf-b481-871f66c027db" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToCallOptionsAndWarrants_01a02127-6b41-7bd2-9a83-524139553ef2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncrementalCommonSharesAttributableToCallOptionsAndWarrants"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_01a02127-6b41-745b-bd36-829b47bc8f6a" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToCallOptionsAndWarrants_01a02127-6b41-7bd2-9a83-524139553ef2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_01a02127-6b41-7b35-9f94-062fd14f8692" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_01a02127-6b41-745b-bd36-829b47bc8f6a" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_01a02127-6b41-7b35-9f94-062fd14f8692" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_01a02127-6b41-7c4a-8f48-c4b7e3a068c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_01a02127-6b41-745b-bd36-829b47bc8f6a" xlink:to="loc_us-gaap_EarningsPerShareDiluted_01a02127-6b41-7c4a-8f48-c4b7e3a068c7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_01a02127-6b41-7211-a2d0-27aa611fdbeb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_01a02127-6b41-745b-bd36-829b47bc8f6a" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_01a02127-6b41-7211-a2d0-27aa611fdbeb" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gm.com/role/SegmentReportingDetails" xlink:type="simple" xlink:href="gm-20260930.xsd#SegmentReportingDetails"/>
  <link:definitionLink xlink:role="http://www.gm.com/role/SegmentReportingDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_01a02127-6b41-7c2a-806f-bc1d87ca8e18" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a02127-6b41-7d5b-aa36-4272be240c51" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a02127-6b41-7c2a-806f-bc1d87ca8e18" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a02127-6b41-7d5b-aa36-4272be240c51" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupAxis_01a02127-6b41-7b3d-b556-4ab6f0d8bd7f" xlink:href="gm-20260930.xsd#gm_BusinessGroupAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a02127-6b41-7d5b-aa36-4272be240c51" xlink:to="loc_gm_BusinessGroupAxis_01a02127-6b41-7b3d-b556-4ab6f0d8bd7f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b41-7b3d-b556-4ab6f0d8bd7f_default" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b41-7b3d-b556-4ab6f0d8bd7f" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b41-7b3d-b556-4ab6f0d8bd7f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_BusinessGroupDomain_01a02127-6b41-7a23-b196-94aaaf821579" xlink:href="gm-20260930.xsd#gm_BusinessGroupDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gm_BusinessGroupAxis_01a02127-6b41-7b3d-b556-4ab6f0d8bd7f" xlink:to="loc_gm_BusinessGroupDomain_01a02127-6b41-7a23-b196-94aaaf821579" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_AutomotiveMember_01a02127-6b41-725a-8715-ce146aa59521" xlink:href="gm-20260930.xsd#gm_AutomotiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gm_BusinessGroupDomain_01a02127-6b41-7a23-b196-94aaaf821579" xlink:to="loc_gm_AutomotiveMember_01a02127-6b41-725a-8715-ce146aa59521" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_01a02127-6b41-7323-82e9-90f86b4f6b07" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a02127-6b41-7d5b-aa36-4272be240c51" xlink:to="loc_srt_ConsolidationItemsAxis_01a02127-6b41-7323-82e9-90f86b4f6b07" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_01a02127-6b41-7323-82e9-90f86b4f6b07_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_01a02127-6b41-7323-82e9-90f86b4f6b07" xlink:to="loc_srt_ConsolidationItemsDomain_01a02127-6b41-7323-82e9-90f86b4f6b07_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_01a02127-6b41-73cd-9d0c-ec4b784a9fc9" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_01a02127-6b41-7323-82e9-90f86b4f6b07" xlink:to="loc_srt_ConsolidationItemsDomain_01a02127-6b41-73cd-9d0c-ec4b784a9fc9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_01a02127-6b41-7be5-9824-4e1cfd7a0362" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_01a02127-6b41-73cd-9d0c-ec4b784a9fc9" xlink:to="loc_us-gaap_OperatingSegmentsMember_01a02127-6b41-7be5-9824-4e1cfd7a0362" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_01a02127-6b41-7c62-af44-1151e1f8fedf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_01a02127-6b41-73cd-9d0c-ec4b784a9fc9" xlink:to="loc_us-gaap_CorporateNonSegmentMember_01a02127-6b41-7c62-af44-1151e1f8fedf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntersegmentEliminationMember_01a02127-6b41-773b-bf01-1b281d826ead" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntersegmentEliminationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_01a02127-6b41-73cd-9d0c-ec4b784a9fc9" xlink:to="loc_us-gaap_IntersegmentEliminationMember_01a02127-6b41-773b-bf01-1b281d826ead" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_01a02127-6b41-75c5-9ecd-5712fcb9d80a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a02127-6b41-7d5b-aa36-4272be240c51" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_01a02127-6b41-75c5-9ecd-5712fcb9d80a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a02127-6b41-75c5-9ecd-5712fcb9d80a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a02127-6b41-75c5-9ecd-5712fcb9d80a" xlink:to="loc_us-gaap_SegmentDomain_01a02127-6b41-75c5-9ecd-5712fcb9d80a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a02127-6b41-7c78-a618-03aee2f07423" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a02127-6b41-75c5-9ecd-5712fcb9d80a" xlink:to="loc_us-gaap_SegmentDomain_01a02127-6b41-7c78-a618-03aee2f07423" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GMNorthAmericaMember_01a02127-6b41-7096-886c-dcd15d8c96b1" xlink:href="gm-20260930.xsd#gm_GMNorthAmericaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a02127-6b41-7c78-a618-03aee2f07423" xlink:to="loc_gm_GMNorthAmericaMember_01a02127-6b41-7096-886c-dcd15d8c96b1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GMIMember_01a02127-6b41-73b1-847c-3d9258a57e30" xlink:href="gm-20260930.xsd#gm_GMIMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a02127-6b41-7c78-a618-03aee2f07423" xlink:to="loc_gm_GMIMember_01a02127-6b41-73b1-847c-3d9258a57e30" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_CruiseMember_01a02127-6b41-79b7-b24b-a96e64a97442" xlink:href="gm-20260930.xsd#gm_CruiseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a02127-6b41-7c78-a618-03aee2f07423" xlink:to="loc_gm_CruiseMember_01a02127-6b41-79b7-b24b-a96e64a97442" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GMFinancialSegmentMember_01a02127-6b41-7e05-b960-2f39edd30e38" xlink:href="gm-20260930.xsd#gm_GMFinancialSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a02127-6b41-7c78-a618-03aee2f07423" xlink:to="loc_gm_GMFinancialSegmentMember_01a02127-6b41-7e05-b960-2f39edd30e38" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_GmnaMember_01a060fa-4b40-75de-8684-9fb8d36a023e" xlink:href="gm-20260930.xsd#gm_GmnaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a02127-6b41-7c78-a618-03aee2f07423" xlink:to="loc_gm_GmnaMember_01a060fa-4b40-75de-8684-9fb8d36a023e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_01a060fa-4b40-71f0-8cae-ab925a0742d9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a02127-6b41-7d5b-aa36-4272be240c51" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_01a060fa-4b40-71f0-8cae-ab925a0742d9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_01a060fa-4b40-71f0-8cae-ab925a0742d9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_01a060fa-4b40-71f0-8cae-ab925a0742d9" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_01a060fa-4b40-71f0-8cae-ab925a0742d9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_01a060fa-4b40-7af8-9a37-3a0d82b134d8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_01a060fa-4b40-71f0-8cae-ab925a0742d9" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_01a060fa-4b40-7af8-9a37-3a0d82b134d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_ImpairedEmissionsCreditsMember_01a060fa-4b40-7799-912f-3fa5631e6698" xlink:href="gm-20260930.xsd#gm_ImpairedEmissionsCreditsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_01a060fa-4b40-7af8-9a37-3a0d82b134d8" xlink:to="loc_gm_ImpairedEmissionsCreditsMember_01a060fa-4b40-7799-912f-3fa5631e6698" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_01a02127-6b41-7cda-94c8-50ae70a8477a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a02127-6b41-7c2a-806f-bc1d87ca8e18" xlink:to="loc_us-gaap_Revenues_01a02127-6b41-7cda-94c8-50ae70a8477a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingOtherItemAmount_01a02127-6b41-7c77-b4ce-1ccd2f0b22be" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingOtherItemAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a02127-6b41-7c2a-806f-bc1d87ca8e18" xlink:to="loc_us-gaap_SegmentReportingOtherItemAmount_01a02127-6b41-7c77-b4ce-1ccd2f0b22be" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_EarningsLossBeforeAutomotiveInterestAndTaxesAdjusted_01a02127-6b41-70ff-adba-d9b3af2d9613" xlink:href="gm-20260930.xsd#gm_EarningsLossBeforeAutomotiveInterestAndTaxesAdjusted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a02127-6b41-7c2a-806f-bc1d87ca8e18" xlink:to="loc_gm_EarningsLossBeforeAutomotiveInterestAndTaxesAdjusted_01a02127-6b41-70ff-adba-d9b3af2d9613" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_ReconcilingAdjustments_01a02127-6b41-79d8-8254-e3b5d197745f" xlink:href="gm-20260930.xsd#gm_ReconcilingAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a02127-6b41-7c2a-806f-bc1d87ca8e18" xlink:to="loc_gm_ReconcilingAdjustments_01a02127-6b41-79d8-8254-e3b5d197745f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_InterestIncome_01a02127-6b41-7b51-a087-f206fe49e803" xlink:href="gm-20260930.xsd#gm_InterestIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a02127-6b41-7c2a-806f-bc1d87ca8e18" xlink:to="loc_gm_InterestIncome_01a02127-6b41-7b51-a087-f206fe49e803" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_01a02127-6b41-7584-9da6-8c4f2eaba757" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a02127-6b41-7c2a-806f-bc1d87ca8e18" xlink:to="loc_us-gaap_InterestExpenseNonoperating_01a02127-6b41-7584-9da6-8c4f2eaba757" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_01a02127-6b41-7d82-8f6f-22974486d891" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a02127-6b41-7c2a-806f-bc1d87ca8e18" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_01a02127-6b41-7d82-8f6f-22974486d891" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a02127-6b41-7441-9b5d-701d89ca7c38" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a02127-6b41-7c2a-806f-bc1d87ca8e18" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a02127-6b41-7441-9b5d-701d89ca7c38" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_01a02127-6b41-7e8b-95ba-7369b78928b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a02127-6b41-7c2a-806f-bc1d87ca8e18" xlink:to="loc_us-gaap_EquityMethodInvestments_01a02127-6b41-7e8b-95ba-7369b78928b6" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetIncludingGoodwill_01a02127-6b41-77a4-b53e-640012dac375" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntangibleAssetsNetIncludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a02127-6b41-7c2a-806f-bc1d87ca8e18" xlink:to="loc_us-gaap_IntangibleAssetsNetIncludingGoodwill_01a02127-6b41-77a4-b53e-640012dac375" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_01a02127-6b41-77af-befb-a5c9dc1d5e47" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a02127-6b41-7c2a-806f-bc1d87ca8e18" xlink:to="loc_us-gaap_Assets_01a02127-6b41-77af-befb-a5c9dc1d5e47" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentExpenditureAdditionToLongLivedAssets_01a02127-6b41-7007-9235-6889e8ec6763" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentExpenditureAdditionToLongLivedAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a02127-6b41-7c2a-806f-bc1d87ca8e18" xlink:to="loc_us-gaap_SegmentExpenditureAdditionToLongLivedAssets_01a02127-6b41-7007-9235-6889e8ec6763" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_01a02127-6b41-7164-b95d-df2a3acf42b5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a02127-6b41-7c2a-806f-bc1d87ca8e18" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_01a02127-6b41-7164-b95d-df2a3acf42b5" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetImpairmentCharges_01a02127-6b41-7153-b832-77068b48c448" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a02127-6b41-7c2a-806f-bc1d87ca8e18" xlink:to="loc_us-gaap_AssetImpairmentCharges_01a02127-6b41-7153-b832-77068b48c448" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_01a02127-6b41-7de7-aabd-25451955ce92" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a02127-6b41-7c2a-806f-bc1d87ca8e18" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_01a02127-6b41-7de7-aabd-25451955ce92" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_01a060fa-4b40-70d6-b782-1a6874ffd311" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a02127-6b41-7c2a-806f-bc1d87ca8e18" xlink:to="loc_us-gaap_RestructuringCharges_01a060fa-4b40-70d6-b782-1a6874ffd311" xlink:type="arc" order="15"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://fasb.org/srt/role/srt-eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-roles-2026.xsd#eedm1"/>
  <link:definitionLink xlink:role="http://fasb.org/srt/role/srt-eedm/ExtensibleEnumerationLists" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract" xlink:to="loc_us-gaap_AccountsPayableCurrent" xlink:type="arc" order="31"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/ecd/role/IndividualsOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#IndividualsOnly"/>
  <link:definitionLink xlink:role="http://xbrl.sec.gov/ecd/role/IndividualsOnly" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AllIndividualsMember" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_AllIndividualsMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_RoryV.HarveyMember_01a02127-675e-7eb3-827e-baa571d22ac7" xlink:href="gm-20260930.xsd#gm_RoryV.HarveyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ecd_AllIndividualsMember" xlink:to="loc_gm_RoryV.HarveyMember_01a02127-675e-7eb3-827e-baa571d22ac7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gm_PaulA.JacobsonMember_01a13833-24de-7e2b-a888-4c427840c4d1" xlink:href="gm-20260930.xsd#gm_PaulA.JacobsonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ecd_AllIndividualsMember" xlink:to="loc_gm_PaulA.JacobsonMember_01a13833-24de-7e2b-a888-4c427840c4d1" xlink:type="arc" order="3"/>
  </link:definitionLink>
</link:linkbase>
