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  <xs:element id="gtx_StockRepurchaseProgramPricePerShare" abstract="false" name="StockRepurchaseProgramPricePerShare" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <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_TermLoanFacilityMember" abstract="true" name="TermLoanFacilityMember" 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-types:perShareItemType"/>
  <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_IncreaseDecreaseInRetainedEarnings" abstract="false" name="IncreaseDecreaseInRetainedEarnings" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_HoneywellInternationalIncMember" abstract="true" name="HoneywellInternationalIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_PercentageOfExcessCashFlowProceedsForYearOne" abstract="false" name="PercentageOfExcessCashFlowProceedsForYearOne" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <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_CreditAgreementEURTrancheMember" abstract="true" name="CreditAgreementEURTrancheMember" 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_LongTermDebtMaturityAfterYearFour" abstract="false" name="LongTermDebtMaturityAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_CommonStockRepurchaseProgramMember" abstract="true" name="CommonStockRepurchaseProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gtx_StockRepurchaseProgramFairValueAssumptionsDividendYield" abstract="false" name="StockRepurchaseProgramFairValueAssumptionsDividendYield" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gtx_StockRepurchaseProgramVolumeWeightedAverageSharePriceCalculationTradingDays" abstract="false" name="StockRepurchaseProgramVolumeWeightedAverageSharePriceCalculationTradingDays" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="gtx_AccumulateDividendMember" abstract="true" name="AccumulateDividendMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_IncreaseOfAmortizationOfFinancingCosts" abstract="false" name="IncreaseOfAmortizationOfFinancingCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" 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_BankNotesReceivableSoldNotYetCollected" abstract="false" name="BankNotesReceivableSoldNotYetCollected" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour" abstract="false" name="LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour" nillable="true" xbrli:periodType="instant" 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_TotalEffectsOfTheTransactionsMember" abstract="true" name="TotalEffectsOfTheTransactionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_FirstTermMember" abstract="true" name="FirstTermMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_A2023ConversionMember" abstract="true" name="A2023ConversionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gtx_BorrowingTermAxis" abstract="true" name="BorrowingTermAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <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_AdvancedDiscountsToCustomersNonCurrent" abstract="false" name="AdvancedDiscountsToCustomersNonCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" 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_OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossAfterReclassificationNetOfTax" abstract="false" name="OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossAfterReclassificationNetOfTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_EngineeringRelatedExpensesNettingMember" abstract="true" name="EngineeringRelatedExpensesNettingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_LimitPeriodAfterClosingDateToPrepayCreditFacility" abstract="false" name="LimitPeriodAfterClosingDateToPrepayCreditFacility" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="gtx_LineOfCreditFacilityPeriodicPaymentPercentageOfAggregatePrincipalAmount" abstract="false" name="LineOfCreditFacilityPeriodicPaymentPercentageOfAggregatePrincipalAmount" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gtx_StockRepurchaseProgramFairValueAssumptionsExpectedVolatility" abstract="false" name="StockRepurchaseProgramFairValueAssumptionsExpectedVolatility" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <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_AccountsReceivableSoldNotYetCollected" abstract="false" name="AccountsReceivableSoldNotYetCollected" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_LineOfCreditFacilityFirstPeriod" abstract="false" name="LineOfCreditFacilityFirstPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <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_OtherMember" abstract="true" name="OtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_ResearchAndDevelopmentOfNewProductCostsMember" abstract="true" name="ResearchAndDevelopmentOfNewProductCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <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_ResearchAndDevelopmentExpenseCustomerReimbursement" abstract="false" name="ResearchAndDevelopmentExpenseCustomerReimbursement" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gtx_LitigationPeriodToFileAComplaint" abstract="false" name="LitigationPeriodToFileAComplaint" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="gtx_SettlementOfAccumulatedDividendsMember" abstract="true" name="SettlementOfAccumulatedDividendsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_StockRepurchasedDuringPeriodTransactionRelatedCosts" abstract="false" name="StockRepurchasedDuringPeriodTransactionRelatedCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" 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_EquityInterestsIssuedAndIssuableEntityCommonSharesIssuedPerExistingPreferredShare" abstract="false" name="EquityInterestsIssuedAndIssuableEntityCommonSharesIssuedPerExistingPreferredShare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="gtx_ExciseTaxOnShareRepurchaseMember" abstract="true" name="ExciseTaxOnShareRepurchaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_SummaryOfSupplementalBalanceSheetInformationRelatedToOperatingLeasesTableTextBlock" abstract="false" name="SummaryOfSupplementalBalanceSheetInformationRelatedToOperatingLeasesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <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_DisclosureOfDetailedInformationAboutTradeReceivablesAndGuaranteedBankNotesTableTextBlock" abstract="false" name="DisclosureOfDetailedInformationAboutTradeReceivablesAndGuaranteedBankNotesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="gtx_SecuritiesLitigationMember" abstract="true" name="SecuritiesLitigationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="gtx_ForeignCurrencyTransactionGainLossExcludingHedgesBeforeTax" abstract="false" name="ForeignCurrencyTransactionGainLossExcludingHedgesBeforeTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" 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_RestrictionsChangesToGovernanceRightsMaximumTerm" abstract="false" name="RestrictionsChangesToGovernanceRightsMaximumTerm" nillable="true" xbrli:periodType="instant" 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_StockRepurchaseProgramVolumeWeightedAverageSharePrice" abstract="false" name="StockRepurchaseProgramVolumeWeightedAverageSharePrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="gtx_AdditionalAmountsMember" abstract="true" name="AdditionalAmountsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_RestrictionsLimitsToPurchaseEquitySecuritiesMaximumTerm" abstract="false" name="RestrictionsLimitsToPurchaseEquitySecuritiesMaximumTerm" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <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_PercentageOfExcessCashFlowProceedsForYearTwo" abstract="false" name="PercentageOfExcessCashFlowProceedsForYearTwo" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="gtx_OperatingLeaseRightOfUseAssetAbstract" abstract="true" name="OperatingLeaseRightOfUseAssetAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <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_OtherInternationalMember" abstract="true" name="OtherInternationalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
</xs:schema>
