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  <xs:element id="gtx_AccruedFreightCostCurrent" abstract="false" name="AccruedFreightCostCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_ConsolidatedTotalLeverageRatio" abstract="false" name="ConsolidatedTotalLeverageRatio" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="gtx_AccruedCustomerPricingReserveCurrent" abstract="false" name="AccruedCustomerPricingReserveCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_AccumulatedGainLossChangesInFairValueOfNetInvestmentHedgesMember" abstract="true" name="AccumulatedGainLossChangesInFairValueOfNetInvestmentHedgesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_IncrementalCommonSharesAttributableToUnvestedRestrictedStockUnitsAndOtherContingentlyIssuableShares" abstract="false" name="IncrementalCommonSharesAttributableToUnvestedRestrictedStockUnitsAndOtherContingentlyIssuableShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="gtx_ExciseTaxOnShareRepurchases" abstract="false" name="ExciseTaxOnShareRepurchases" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_CreditAgreementUSDTrancheMember" abstract="true" name="CreditAgreementUSDTrancheMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_TermLoanFacilityMember" abstract="true" name="TermLoanFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour" abstract="false" name="LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_OriginalEquipmentManufacturersMember" abstract="true" name="OriginalEquipmentManufacturersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_OperatingLeaseRightOfUseAssetAbstract" abstract="true" name="OperatingLeaseRightOfUseAssetAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="gtx_SupplierFinancingObligationsMember" abstract="true" name="SupplierFinancingObligationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_CreditAgreementEURTrancheMember" abstract="true" name="CreditAgreementEURTrancheMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_AdvancedDiscountsToCustomersNonCurrent" abstract="false" name="AdvancedDiscountsToCustomersNonCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_DeferredPaymentsSaleOfEquityMethodInvestmentsSecondPaymentTerm" abstract="false" name="DeferredPaymentsSaleOfEquityMethodInvestmentsSecondPaymentTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="gtx_ProceedsFromIssuanceOfSeniorSecuredDebtAndTermLoanNetOfDeferredFinancingCosts" abstract="false" name="ProceedsFromIssuanceOfSeniorSecuredDebtAndTermLoanNetOfDeferredFinancingCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_GainLossOnRemeasurementOfForwardPurchaseContract" abstract="false" name="GainLossOnRemeasurementOfForwardPurchaseContract" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_A2023USDollarTermLoanFacilityMember" abstract="true" name="A2023USDollarTermLoanFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gtx_LesseeOperatingLeaseRemainingLeaseTermOfContract" abstract="false" name="LesseeOperatingLeaseRemainingLeaseTermOfContract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="gtx_FactoringAndNotesReceivableTextBlock" abstract="false" name="FactoringAndNotesReceivableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="gtx_EuroTermLoanFacilityAndDollarTermFacilityMember" abstract="true" name="EuroTermLoanFacilityAndDollarTermFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gtx_SummaryOfSupplementalCashFlowInformationRelatedToOperatingLeasesTableTextBlock" abstract="false" name="SummaryOfSupplementalCashFlowInformationRelatedToOperatingLeasesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="gtx_CreditAgreementMember" abstract="true" name="CreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_OtherMember" abstract="true" name="OtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_IncreaseDecreaseInAccountsNotesAndOtherReceivables" abstract="false" name="IncreaseDecreaseInAccountsNotesAndOtherReceivables" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_AmortizationOfDeferredIssuanceCosts" abstract="false" name="AmortizationOfDeferredIssuanceCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_AccountsPayableNoncurrent" abstract="false" name="AccountsPayableNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
