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  <xs:element id="gtx_PercentageOfTargetLevelToGrantPerformanceStockUnits" abstract="false" name="PercentageOfTargetLevelToGrantPerformanceStockUnits" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="gtx_RepaymentsOfLongTermDebtAndAccruedInterest" abstract="false" name="RepaymentsOfLongTermDebtAndAccruedInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_PaymentsForDividendsOfConvertiblePreferredStock" abstract="false" name="PaymentsForDividendsOfConvertiblePreferredStock" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_StockRepurchaseProgramVolumeWeightedAverageSharePriceCalculationTradingDays" abstract="false" name="StockRepurchaseProgramVolumeWeightedAverageSharePriceCalculationTradingDays" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="gtx_OperatingLeaseRightOfUseAssetAbstract" abstract="true" name="OperatingLeaseRightOfUseAssetAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="gtx_ScheduleOfShareBasedPaymentAwardPerformanceStockUnitsValuationAssumptionsTableTextBlock" abstract="false" name="ScheduleOfShareBasedPaymentAwardPerformanceStockUnitsValuationAssumptionsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="gtx_SupplierFinanceProgramPolicyTextBlock" abstract="false" name="SupplierFinanceProgramPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="gtx_StockRepurchaseProgramFairValueAssumptionsDividendYield" abstract="false" name="StockRepurchaseProgramFairValueAssumptionsDividendYield" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="gtx_EffectsOfTheTransactionAxis" abstract="true" name="EffectsOfTheTransactionAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="gtx_SummaryOfSupplementalCashFlowInformationRelatedToOperatingLeasesTableTextBlock" abstract="false" name="SummaryOfSupplementalCashFlowInformationRelatedToOperatingLeasesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <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_IncreaseDecreaseInPreferredStockValue" abstract="false" name="IncreaseDecreaseInPreferredStockValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossAfterReclassificationNetOfTax" abstract="false" name="OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossAfterReclassificationNetOfTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_AdditionalAmountsMember" abstract="true" name="AdditionalAmountsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_StockCashOutElectionDuringPeriodShares" abstract="false" name="StockCashOutElectionDuringPeriodShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="gtx_DefinedBenefitPlanPlanAssetsBenefitsPaidAndContributionsByPlanParticipant" abstract="false" name="DefinedBenefitPlanPlanAssetsBenefitsPaidAndContributionsByPlanParticipant" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_DeferredTaxAssetsIntangiblesAndFixedAssets" abstract="false" name="DeferredTaxAssetsIntangiblesAndFixedAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_IncreaseDecreaseInPreferredStockCommonStockAndAdditionalPaidInCapital" abstract="false" name="IncreaseDecreaseInPreferredStockCommonStockAndAdditionalPaidInCapital" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_FirstTermMember" abstract="true" name="FirstTermMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gtx_CustomerAMember" abstract="true" name="CustomerAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_DefinedBenefitPlanBenefitObligationBenefitsPaidAndContributionsByPlanParticipant" abstract="false" name="DefinedBenefitPlanBenefitObligationBenefitsPaidAndContributionsByPlanParticipant" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_OtherComprehensiveIncomeLossDefinedBenefitPlanPriorServiceCreditRecognized" abstract="false" name="OtherComprehensiveIncomeLossDefinedBenefitPlanPriorServiceCreditRecognized" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_HoneywellInternationalIncMember" abstract="true" name="HoneywellInternationalIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_LineOfCreditFacilityFirstPeriod" abstract="false" name="LineOfCreditFacilityFirstPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="gtx_BorrowingTermDomain" abstract="true" name="BorrowingTermDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gtx_LineOfCreditFacilityIncreaseDecreaseInMaximumBorrowingCapacity" abstract="false" name="LineOfCreditFacilityIncreaseDecreaseInMaximumBorrowingCapacity" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_RevenueRemainingPerformanceObligationTimingOfSatisfactionPeriod" abstract="false" name="RevenueRemainingPerformanceObligationTimingOfSatisfactionPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="gtx_TotalEffectsOfTheTransactionsMember" abstract="true" name="TotalEffectsOfTheTransactionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_A2021USDollarTermLoanFacilityMember" abstract="true" name="A2021USDollarTermLoanFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_RevenueRecognitionAndContractsWithCustomersLineItems" abstract="true" name="RevenueRecognitionAndContractsWithCustomersLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="gtx_SeriesARepurchaseMember" abstract="true" name="SeriesARepurchaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_EffectsOfTheTransactionDomain" abstract="true" name="EffectsOfTheTransactionDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_StockCashOutElectionDuringPeriodValue" abstract="false" name="StockCashOutElectionDuringPeriodValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_CustomerBMember" abstract="true" name="CustomerBMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_GuaranteedBankNotesMember" abstract="true" name="GuaranteedBankNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_StockRepurchaseProgramFairValueAssumptionsExpectedVolatility" abstract="false" name="StockRepurchaseProgramFairValueAssumptionsExpectedVolatility" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="gtx_PercentageOfExcessCashFlowProceedsForYearTwo" abstract="false" name="PercentageOfExcessCashFlowProceedsForYearTwo" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="gtx_ReorganizationItemsNetMember" abstract="true" name="ReorganizationItemsNetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_BankNotesReceivableSoldNotYetCollected" abstract="false" name="BankNotesReceivableSoldNotYetCollected" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_IncreaseOfAmortizationOfFinancingCosts" abstract="false" name="IncreaseOfAmortizationOfFinancingCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_WeightedPerformanceMeasuresForPSUsGrantedAdjustedEBITDAMarginPercentage" abstract="false" name="WeightedPerformanceMeasuresForPSUsGrantedAdjustedEBITDAMarginPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="gtx_ExciseTaxOnShareRepurchaseMember" abstract="true" name="ExciseTaxOnShareRepurchaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_AdditionalAmountsAndAccumulatedDividendsMember" abstract="true" name="AdditionalAmountsAndAccumulatedDividendsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gtx_ResearchAndDevelopmentExpenseNetOfCustomerReimbursement" abstract="false" name="ResearchAndDevelopmentExpenseNetOfCustomerReimbursement" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_RestrictionsChangesToGovernanceRightsMaximumTerm" abstract="false" name="RestrictionsChangesToGovernanceRightsMaximumTerm" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="gtx_AccountsNotesAndOtherReceivablesGross" abstract="false" name="AccountsNotesAndOtherReceivablesGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_UnamortizedStockCompensationExpense" abstract="false" name="UnamortizedStockCompensationExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_CenterbridgeOaktreeAndAdditionalInvestorsMember" abstract="true" name="CenterbridgeOaktreeAndAdditionalInvestorsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_RevenueContractWithCustomerCashAdvancesAndUnbilledReceivablesSettlementPeriod" abstract="false" name="RevenueContractWithCustomerCashAdvancesAndUnbilledReceivablesSettlementPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="gtx_DeferredTaxLiabilitiesUndistributedForeignEarningsWithholdingTaxes" abstract="false" name="DeferredTaxLiabilitiesUndistributedForeignEarningsWithholdingTaxes" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_EffectiveIncomeTaxRateReconciliationWithholdingAndOtherTaxesOnForeignEarningsPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationWithholdingAndOtherTaxesOnForeignEarningsPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="gtx_TwoThousandTwentyOneLongTermIncentivePlanMember" abstract="true" name="TwoThousandTwentyOneLongTermIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1: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_DefinedBenefitPlanAssetsAtFairValueMember" abstract="true" name="DefinedBenefitPlanAssetsAtFairValueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_EquityIncomeOfAffiliatedCompanies" abstract="false" name="EquityIncomeOfAffiliatedCompanies" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_PensionBenefitsNetActuarialGainLossesRecognitionMinimumPercentageOfGreaterOfFairValueOfPlanAssetsOrProjectedBenefitObligation" abstract="false" name="PensionBenefitsNetActuarialGainLossesRecognitionMinimumPercentageOfGreaterOfFairValueOfPlanAssetsOrProjectedBenefitObligation" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="gtx_A2023USDollarTermLoanFacilityMember" abstract="true" name="A2023USDollarTermLoanFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_TwoThousandTwentyThreePerformanceStockUnitsLongTermIncentivePlanForRelativeTotalShareholderReturnRTSRWithStockPriceHurdlesMeasuredMember" abstract="true" name="TwoThousandTwentyThreePerformanceStockUnitsLongTermIncentivePlanForRelativeTotalShareholderReturnRTSRWithStockPriceHurdlesMeasuredMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gtx_ReceivableFromTransferAgentCurrent" abstract="false" name="ReceivableFromTransferAgentCurrent" nillable="true" xbrli:periodType="instant" 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:element id="gtx_IncreaseDecreaseInAdditionalPaidInCapital" abstract="false" name="IncreaseDecreaseInAdditionalPaidInCapital" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_RelatedPartyTransactionsPolicyPolicyTextBlock" abstract="false" name="RelatedPartyTransactionsPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="gtx_ResearchAndDevelopmentExpenseCustomerReimbursement" abstract="false" name="ResearchAndDevelopmentExpenseCustomerReimbursement" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_DefinedBenefitPlanPlanAssetsIncreaseDecreaseForOtherChange" abstract="false" name="DefinedBenefitPlanPlanAssetsIncreaseDecreaseForOtherChange" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_AuditInformationAbstract" abstract="true" name="AuditInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="gtx_DirectMaterialPurchasesMember" abstract="true" name="DirectMaterialPurchasesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_OfficersAndCertainKeyEmployeesMember" abstract="true" name="OfficersAndCertainKeyEmployeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_DefinedBenefitPlanBenefitObligationUnrecognizedLossRecognizedAsPensionSettlementExpense" abstract="false" name="DefinedBenefitPlanBenefitObligationUnrecognizedLossRecognizedAsPensionSettlementExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_IncrementalCommonSharesAttributableToParticipatingSecurities" abstract="false" name="IncrementalCommonSharesAttributableToParticipatingSecurities" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="gtx_SessaCapitalAndItsAffiliatesMember" abstract="true" name="SessaCapitalAndItsAffiliatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gtx_StockIncentivePlanAndLongTermIncentivePlanMember" abstract="true" name="StockIncentivePlanAndLongTermIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <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_AmortizationOfDeferredDebtIssuanceCosts" abstract="false" name="AmortizationOfDeferredDebtIssuanceCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_GovernmentGrants" abstract="false" name="GovernmentGrants" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_OtherComprehensiveIncomeDefinedBenefitPlanActuarialLossesRecognized" abstract="false" name="OtherComprehensiveIncomeDefinedBenefitPlanActuarialLossesRecognized" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_IncomeTaxExaminationPenaltiesAndInterestTaxExpenseBenefit" abstract="false" name="IncomeTaxExaminationPenaltiesAndInterestTaxExpenseBenefit" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_AdvancedDiscountsFromSuppliersNoncurrent" abstract="false" name="AdvancedDiscountsFromSuppliersNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_FactoringAndNotesReceivablesDiscountFees" abstract="false" name="FactoringAndNotesReceivablesDiscountFees" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_ReorganizationItemsPaidNet" abstract="false" name="ReorganizationItemsPaidNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_AccumulateDividendMember" abstract="true" name="AccumulateDividendMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_ServiceCostMember" abstract="true" name="ServiceCostMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_OtherComprehensiveIncomeDefinedBenefitPlanForeignCurrencyTranslation" abstract="false" name="OtherComprehensiveIncomeDefinedBenefitPlanForeignCurrencyTranslation" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_DebtInstrumentPeriodicPaymentInterestApplicablePeriodExceedsThreeMonths" abstract="false" name="DebtInstrumentPeriodicPaymentInterestApplicablePeriodExceedsThreeMonths" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="gtx_OtherChangesInPlanAssetsAndBenefitObligationsRecognizedInOtherComprehensiveIncomeLossAbstract" abstract="true" name="OtherChangesInPlanAssetsAndBenefitObligationsRecognizedInOtherComprehensiveIncomeLossAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="gtx_AlternateBaseRateMember" abstract="true" name="AlternateBaseRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_SecondTermMember" abstract="true" name="SecondTermMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gtx_StockRepurchasedDuringPeriodTransactionRelatedCosts" abstract="false" name="StockRepurchasedDuringPeriodTransactionRelatedCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_PaymentsForRepurchaseOfRedeemablePreferredStockInterest" abstract="false" name="PaymentsForRepurchaseOfRedeemablePreferredStockInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_ScheduleOfFactoringAndNotesReceivableTableTextBlock" abstract="false" name="ScheduleOfFactoringAndNotesReceivableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="gtx_BenefitObligationMember" abstract="true" name="BenefitObligationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_PaymentsForCashOutElection" abstract="false" name="PaymentsForCashOutElection" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_AccountsReceivableSoldNotYetCollected" abstract="false" name="AccountsReceivableSoldNotYetCollected" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_PercentageOfExcessCashFlowProceedsForYearThree" abstract="false" name="PercentageOfExcessCashFlowProceedsForYearThree" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="gtx_AdvancedDiscountsToCustomersCurrent" abstract="false" name="AdvancedDiscountsToCustomersCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentageDependsOnPerformanceMeasuresAreRelatedToAdjustedEBITDA" abstract="false" name="SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentageDependsOnPerformanceMeasuresAreRelatedToAdjustedEBITDA" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="gtx_InterestPaidSeriesBPreferredStockNetOfDebtDiscountAccretion" abstract="false" name="InterestPaidSeriesBPreferredStockNetOfDebtDiscountAccretion" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_StockIncentivePlanMember" abstract="true" name="StockIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_ContinuityAwardsMember" abstract="true" name="ContinuityAwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_LineOfCreditFacilityExtensionPeriod" abstract="false" name="LineOfCreditFacilityExtensionPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <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_LongTermIncentivePlanMember" abstract="true" name="LongTermIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_AdvancedDiscountsFromSuppliersAccruedCurrent" abstract="false" name="AdvancedDiscountsFromSuppliersAccruedCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_IncreaseDecreaseInObligationsPayableToFormerParent" abstract="false" name="IncreaseDecreaseInObligationsPayableToFormerParent" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_StockRepurchaseProgramStartingPricePerShare" abstract="false" name="StockRepurchaseProgramStartingPricePerShare" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="gtx_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRightsPercentageDependsOnPerformanceMeasuresAreRelatedToAdjustedEBITDAMargin" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRightsPercentageDependsOnPerformanceMeasuresAreRelatedToAdjustedEBITDAMargin" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="gtx_TwoThousandTwentyOnePerformanceStockUnitsLongTermIncentivePlanForAdjustedEBITDAAndAdjustedEBITDAMarginMeasuresMember" abstract="true" name="TwoThousandTwentyOnePerformanceStockUnitsLongTermIncentivePlanForAdjustedEBITDAAndAdjustedEBITDAMarginMeasuresMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <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_SupplierFinanceProgramFee" abstract="false" name="SupplierFinanceProgramFee" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_InterestCostMember" abstract="true" name="InterestCostMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_NetIncomeLossAvailableForDistribution" abstract="false" name="NetIncomeLossAvailableForDistribution" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_BankNotesReceivable" abstract="false" name="BankNotesReceivable" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_DeferredTaxAssetsNetOperatingLossesAndOtherTaxAttributeCarryforwards" abstract="false" name="DeferredTaxAssetsNetOperatingLossesAndOtherTaxAttributeCarryforwards" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_OthersCustomerMember" abstract="true" name="OthersCustomerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_A2023ConversionMember" abstract="true" name="A2023ConversionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <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_EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActPrecent" abstract="false" name="EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActPrecent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="gtx_AccountsNotesAndOtherReceivablesNet" abstract="false" name="AccountsNotesAndOtherReceivablesNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_EuroTermLoanFacilityMember" abstract="true" name="EuroTermLoanFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_IncreaseDecreaseInCommonStockValue" abstract="false" name="IncreaseDecreaseInCommonStockValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_RecordedToEquityMember" abstract="true" name="RecordedToEquityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
</xs:schema>
