gm acronyms

2006 Acronyms & Abbreviations 1

2HI Two-Wheel Drive High Range2LO Two-Wheel Drive Low Range2WD Two-Wheel Drive2WS Two-Wheel Steer3GR Third Gear4GR Fourth Gear4HI Four-Wheel Drive High Range4LO Four-Wheel Drive Low Range4WAL Four-Wheel Antilock4WD Four-Wheel Drive4WS Four-Wheel Steer

AAAT Ambient Air TemperatureABS Antilock Brake SystemA/C Air ConditioningACC Adaptive Cruise Control

Term Definition Term Definition

Accel AccelerationAccum AccumulatorAcc AccessoryACL Air CleanerACM Air Conditioning ModuleAct ActualActv Activate, activated, activeA/D Analog to DigitalAD Accommodated DeviceAdapt AdaptiveAdapts Adaptation values, adaptersADG Accommodated Device GatewayAdj Adjust, adjustableADL Automatic Door LockADS Auxiliary Discriminating SensorA/F Air/Fuel RatioAFECM Alternative Fuel Engine Control Module

Acronyms and AbbreviationsThe product engineering division of General Motors Service and Parts Operations offers for your reference thefollowing list of abbreviated terms and acronyms that the Tech 2 displays.

To search for a specific term, click on a letter above to take you closer to the abbreviation or acronym you seek, orclick on the Adobe Reader binocular “Search” icon (usually located on the toolbar near the top of your screen)and enter the exact term.


AFO Alternative Fuel OperationAFS Adaptive Forward Lighting SystemAft After, aft (rear)AHLD Automatic Headlamp Leveling DeviceAhrs Amp hoursAIR Secondary Air InjectionALC Automatic Lamp Control

Automatic Level ControlALDL Assembly Line Diagnostic LinkALM Automatic Level ModuleAlt AlternativeAM Amplitude ModulationAmp AmplifierAmps AmperageAPM Accessory Power ModuleAPO Auxiliary Power OutletAPP Accelerator Pedal PositionAppl ApplicationApr AprilARS Adaptive Receptive SystemAS Air SuspensionASCM Air Suspension Control ModuleAsm AssemblyASM Alarm Siren Module

Automatic (radio) Station MemoryAir Suspension Module

ASR Acceleration Slip RegulationA/T Automatic TransmissionATC Active Transfer Case

Automatic Transfer CaseATF Automatic Transmission FluidAug AugustAuto AutomaticAux AuxiliaryAvg AverageAWD All-Wheel Drive

BB+ Battery Positive VoltageBARO Barometric PressureBAS Brake Apply SensorBASS Brake Apply Sensing SystemBatt BatteryBBV Brake Booster VacuumBCM Body Control ModuleBCO Battery CutoffBECM Battery Energy Control ModuleBFC Body Function Controllerblts BeltsBLW Brake Lining WearBn BankBPCM Battery Pack Control Module



BPMV Brake Pressure Modulator ValveBPP Brake Pedal PositionBTCM Brake Torque Control ModuleBTSI Brake Transmission Shift Interlock

CCAC Charged Air CoolerCal CalibrationCalc CalculatedCAN Controller Area NetworkCANdi Controller Area Network Diagnostic

InterfaceCASE Crankshaft Angle Sense ErrorCass CassetteC/C Cruise ControlCC Climate ControlCCM Central Control ModuleCCW Counter ClockwiseCD Compact DiscCDX Compact Disc ChangerCh ChapterCIM Control Integration ModuleCKP Crankshaft PositionCkt CircuitCL Closed Loopcm Centimeter

Cmd CommandCmmd CommandedCMP Crankshaft PositionCNG Compressed Natural GasCO Carbon MonoxideCO2 Carbon DioxideCombo CombinationComm CommunicationCompl Complete, completedCond ConditionConfig ConfigurationCOP Computer Operating ProperlyCPC Clutch Pressure ControlCPP Clutch Pedal PositionCPS Childseat Positioning SensorCRV Coolant Recovery Check ValveCTD Content Theft DeterrentCTP Closed Throttle PositionCtrl ControlCtsy CourtesyCVRSS Continuously Variable Road Sensing

SuspensionCVRTD Continuously Variable Real Time DampingCVT Continuously Variable Transmission

Continuously Variable TransaxleCyl Cylinder



DD DriveDAB Delayed Accessory BusdB DecibelsdBm Decibel MeterDC Duty CycleDCM Door Control ModuleDDM Driver Door ModuleDDS Driver Door SwitchDeact DeactivationDec Decrement, DecemberDecel DecelerationDef DefrostDefog Defoggerdeg Degreesdeg C Degrees Celsiusdeg F Degrees FahrenheitDel DeliveredDERM Diagnostic Energy Reserve ModuleDes DesiredDesc Description, descriptorDFCO Decel Fuel Cut-OffDI Distributor IgnitionDiag DiagnosticDIC Driver Information Center

Diff DifferentialDig DigitDIM Dash Integration ModuleDis DisableDiscon DisconnectDiscrim DiscriminatingDisp DisplayDLC Data Link ConnectorDMCM Drive Motor Control ModuleDMM Digital MultimeterDNR Dolby Noise ReductionDOHC Dual Overhead CamDol DolbyDPM Driver Position ModuleDPVD Disc Player and Video DisplayDr DoorDRL Daytime Running LightsDRP Dynamic Rear ProportionDRR Digital Radio ReceiverDrvr DriverDSCC Distance Sensing Cruise ControlDSM Driver Seat ModuleDSP Digital Signal ProcessDTC Diagnostic Trouble CodeDVD Digital Video DiscDwn Down



EE&C Entertainment and ComfortEBCM Electronic Brake Control ModuleEBM Electronic Brake ModuleEBTCM Electronic Brake and Traction Control

ModuleEC Engine ControlECC Electronic Climate ControlECL Engine Coolant LevelECM Electronic Control Module

Engine Control ModuleEcon EconomyECT Engine Coolant TemperatureECU Electronic Control UnitEEPROM Electrically Erasable Programmable Read-

Only MemoryEFS Electronic Front End SensorEGR Exhaust Gas RecirculationEHCU Electric Hydraulic Control UnitEHPS Electronic Hydraulic Power SteeringEI Electronic IgnitionElec ElectricEMB Electromagnetic BrakeEnab Enable, enabledEng Engine

EOP Engine Oil PressureEOT Engine Oil TemperatureEPM Energy Power ManagementEPR Exhaust Pressure RegulatorEPS Electric Power SteeringEQ EqualizerERH Extended Ride HeightESB Expansion Spring BrakeESC Electronic Suspension ControlESD Electrostatic DischargeESM Electronic Steering ModuleESN Electronic Serial NumberESO Engine Shut-OffEST Electronic Spark TimingEst EstimatedETC Electronic Temperature Control

Electronic Throttle ControlElectronic Timing Control

ETS Enhanced Traction SystemEV Electric VehicleEVAP Evaporative EmissionEvap Evaporator, evaporationEVO Electronic Variable OrificeExh ExhaustExt External, exterior, extended



FF4WD Full-time Four-Wheel DriveFC Fan ControlFdbk FeedbackFE Fuel EconomyFeb FebruaryFEDS Fuel Enable Data StreamFEIC Fuel Economy Integrated CounterFET Field Effect TransistorFICM Fuel Injector Control ModuleFilt FilterFL Front LeftFlr FloorFM Frequency ModulationFP Fuel PumpFPR Fuel Pressure RegulatorFR Front RightFreq FrequencyFrnt FrontFRP Fuel Rail PressureFT Fuel TrimFTC Folding Top ControllerFTP Fuel Tank Pressureft-lbs Foot-pounds

Fwd ForwardFWD Front-Wheel Drive

Gg/cyl Grams per CylinderGEN GeneratorGnd GroundGPCM Glow Plug Control ModuleGPS Global Positioning SystemGS Garage ShiftGVW Gross Vehicle Weight

HHC Hydrocarbon(s)HCM Heating Control ModuleHD Heavy DutyHdlp HeadlampHI HighHID High Intensity DischargeHist HistoryHO2S Heated Oxygen SensorHoriz HorizontalHPCM Hybrid Powertrain Control Modulehr Hourhrs Hours



HSM Heated Seat ModuleHTCM HVAC Thermal Control ModuleHtr HeaterHUD Head-Up DisplayHV Heated/VentedHVAC Heating Ventilation Air ConditioningHVC Heated/Vented/CooledHVSM Heated Ventilated Seat ModuleH/W HardwareHW Heated WindshieldHz Hertz

IIA Intake AirIAC Idle Air ControlIAT Intake Air TemperatureIC Ignition ControlICCS Integrated Chassis Control SystemICDX Integrated Compact Disc ChangerICM Ignition Control ModuleICS Integrated Chassis SystemID IdentificationIgn IgnitionIllum IlluminationI/M Inspection and Maintenance

IMDX Integrated Mini Disc ChangerImmo ImmobilizerIMRC Intake Manifold Runner ControlIMT Intake Manifold Tuningin Inch(es)Inadv InadvertentInc IncrementIncand IncandescentInd IndicatorInfl InflatableInfo InformationInit InitialInj InjectorInst InstantInt Intake, interior, internalI/O In/out, input/outputI/P Instrument PanelIPC Instrument Panel ClusterIPM Instrument Panel ModuleInval InvalidIRQ Interrupt RequestISC Idle Speed ControlIso IsolationISP Internet Service ProviderISS Input Shaft SpeedISU Intelligent Switching Unit



JJan JanuaryJul JulyJun June

KKAM Keep Alive MemoryKDD Keyboard Display Driverkg Kilogram(s)kg/h Kilograms per Hourkm Kilometerkm/h Kilometer per Hourkm/l Kilometer per LiterkPa KilopascalKS Knock Sensor

Llbs PoundsLCD Liquid Crystal DisplayLCM Lighting Control ModuleLD Light DutyLDCL Left Door Close LockingLDCM Left Door Control ModuleLduty Light Duty

LED Light Emitting DiodeLEV Low Emission VehicleLF Left FrontLFWS Left Front Wheel SpeedLGM Lift Gate ModuleLH Left HandLMD Left Mid DoorLO LowLPG Liquefied Petroleum GasLPS Low Pressure SensorL/R Left/RightLR Left RearLRD Left Rear DoorLRDM Left Rear Door ModuleLrn LearnLt Left, lightLTPWS Low Tire Pressure Warning SystemLvl Level



MMAF Mass AirflowMalf MalfunctionMALL Multifunction Alarm Lighting and LockingMan ManualManufact ManufactureMAP Manifold Absolute PressureMar MarchMAT Manifold Air TemperatureMax MaximumMCU Microprocessor Control UnitMD Mini DiscMDM Mobile Digital MediaMDX Mini Disc ChangerMed MediumMem MemoryMFD Multi-Functional DisplayMFI Multiport Fuel InjectorMgmt ManagementMid Middle range, midwayMIL Malfunction Indicator Lampmin Minute(s)Min MinimumMIN Mobile Identification Numbermm Millimeter(s)mmHg Millimeters of Mercury

MMM Memory Mirror ModuleMod ModuleMon Monitormpg Miles per Gallonmph Miles per Hourms Millisecond(s)Msg MessageMSM Memory Seat ModuleMSVA Magnetic Steering Variable AssistM/T Manual TransmissionMtr MotorMult MultipleMUX Multiplexer

NN NeutralN/mm Newtons per millimeterNav NavigationNDH Navigation Display HeadNGO Natural Gas OperationNI Neutral IdleNID Network IdentificationNiMH Nickel Metal HydrideNo NumberNov NovemberNOx Nitrogen Oxides



NR Noise ReductionNV Night VisionNVRAM Non-Volatile Random Access Memory

OO2 OxygenO2S Oxygen SensorOAT Outside Air TemperatureOBD On-Board DiagnosticOBPA Off-Board Programming AdapterOCS Occupant Classification SystemOct OctoberODM Output Driver ModuleOEM Original Equipment ManufacturerOrig OriginalOSC Oxygen Storage CapacityOvertemp Over TemperatureOSS Output Shaft Speed

PP ParkParms ParametersPC Pressure Control (solenoid valve)Pass PassengerPCB Printed Circuit Board

PCM Powertrain Control ModulePCMCIA Personal Computer Memory Card Industry

AssociationPCS Pressure Control SolenoidPCV Positive Crankcase VentilationPDIF Pressure DifferentialPDM Passenger Door ModulePDS Passenger Door SwitchPEB Power Electronics BayPerf PerformancePhn PhonePID Parameter IdentificationPIM Powertrain Interface ModulePIN Personal Identification NumberPLL Phase Locked LoopPMV Pressure Modulator ValvePNP Park/Neutral PositionPos PositionPPS Passenger Presence SensingPress PressurePreten PretensionerPrev PreviousPrim PrimaryPRL Preferred Roaming ListPRM Power Roof ModulePRNDL Park, Reverse, Neutral, Drive, Low



Prog ProgramPROM Programmable Read-Only MemoryPS Power SteeringPSCM Passenger Seat Control ModulePSD Power Sliding DoorPSDM Power Sliding Door ModulePsgr Passengerpsi Pounds per Square InchPSIR Passenger Supplemental Inflatable

RestraintPSM Passenger Seat ModulePSP Power Steering PressurePTO Power Take OffPWM Pulse Width ModulationPwr PowerPZEV Partial Zero Emission VehiclePZM Platform Zone Module

QQDM Quad Drive Module

RR ReverseR/A Resume or AccelerateRAC Remote Accessory ControllerRAM Random Access Memory

RAP Retained Accessory PowerRCC Rear Climate ControlRCDLR Remote Control Door Lock ReceiverRDCM Right Door Control ModuleRDM Rear Door Module

Roof and Door ModuleRDS Radio Display SystemRec ReceiveRecal RecalibrationRecep ReceptacleRecirc RecirculationRecl ReclineRef ReferenceRefrig RefrigerationRegen RegenerateReq Request, requestedResist ResistanceResync ResynchronizeRev ReverseRF Right Front

Radio FrequencyRFA Remote Function ActuatorRFI Radio Frequency InterferenceRFWS Right Front Wheel SpeedRH Right HandRHSM Rear Heated Seat Module



RIM Radio Interface ModuleRear Integration Module

RKE Remote Keyless EntryR/L Right/LeftRMD Right Mid DoorROM Read-Only MemoryRPA Rear Parking AssistRPM Revolutions Per MinuteRPO Regular Production OptionRR Right RearRRD Right Rear DoorRRDM Right Rear Door ModuleRSA Rear Seat AudioRSE Rear Seat EntertainmentRSS Road Sensing SuspensionRt RightRTC Real-Time ClockRTD Real-Time DampingRTT Reconfigurable TelltaleRVAC Rear Video/Audio/HVAC ModuleRVC Rear Voltage Control

Regulated Voltage ControlRVS Remote Vehicle StartRWAL Rear-Wheel AntilockRWD Rear-Wheel DriveRWS Rear-Wheel Steering

Ss Second(s)SARVC Stand-Alone Regulated Voltage Control

ModuleSAS Steering Angle SensorSBM Standard Body ModuleSBT Service Bay TestSC SuperchargerSCB Supercharger BypassSCLM Steering Column Lock ModuleSCV Speed Controlled VolumeSDG Serial Data GatewaySDL Serial Data LinkSDM Sensing and Diagnostic ModuleSec SecondarySen SensorSep SeptemberSeq SequenceSer SerialSFI Sequential Fuel InjectionSGCM Starter Generator Control ModuleSID Station IdentificationSig SignalSIR Supplemental Inflatable RestraintSIS Side Impact Sensor



SMCC Steper Motor Cruise ControlSOD Side Object DirectionSOH State of HealthSol SolenoidSOPS Sunroof Opening Position SwitchSpd SpeedSpeedo SpeedometerSPI Serial Peripheral InterfaceSPS Service Programming SystemSS Speed Signal

Shift SolenoidSSS Speed Sensitive SteeringSSV Shift Solenoid ValveStdby StandbySTL Service Transmission LampSUV Sport Utility VehicleSVS Service Vehicle Soon!S/W SoftwareSw SwitchSWC Steering Wheel ControlsSwitz SwitzerlandSWPS Steering Wheel Position SensorSXR Serial Transmit and ReceiveSync SynchronizeSys System

TTA Traffic AnnouncementTAC Throttle Actuator ControlTach TachometerTAP Transmission Adaptive Pressure

Throttle Adaptive PressureTAS Trap Alert SystemTAV Transmission Adaptive VolumeTBC Truck Body ControllerTBI Throttle Body Fuel InjectionTC TurbochargerTCC Torque Converter ClutchTCCM Transfer Case Control ModuleTCM Transmission Control ModuleTCS Traction Control SystemTCSC Techline Customer Support CenterTDC Top Dead CenterTDM Theft Deterrent ModuleTele TelescopeTemp TemperatureTFP Transmission Fluid PressureTFT Transmission Fluid TemperatureTIM Tire Inflation MonitorTIS Techline Information SystemTorq Torque



TP Throttle PositionTPM Tire Pressure MonitorTPS Throttle Position SwitchTR Transmission RangeTrac TractionTrans TransmissionTransp TransponderTrk TruckTSS Turbine Shaft SpeedTT Telltale LampTTM Tilt and Telescope ModuleTV TelevisionTVAM Television Antenna ModuleTVT Television TunerTVV Thermal Vacuum ValveTWC Three-Way Catalytic ConverterTwtr Tweeter

UUART Universal Asynchronous Receiver

TransmitterULEV Ultra-Low Emission VehicleUnlk Unlock

VV Volt(s)Vac VacuumVal ValveVATS Vehicle Anti-Theft SystemVCI Vehicle Communication InterfaceVCIM Vehicle Communication Interface ModuleVCM Vehicle Control ModuleVCS Vehicle Communication SystemVDR Vehicle Dealer RecorderVeh VehicleVer Vertical, versionVert VerticalVES Variable Effort SteeringVF Vacuum FluorescentVICS Vehicle Information Communication

SystemVIN Vehicle Identification NumberVIU Vehicle Interface UnitVlv ValveVR Voltage RegulatorVSES Vehicle Stability Enhancement SystemVspd Vehicle Speed



VSS Vehicle Speed SensorVSV Vacuum Solenoid ValveVTD Vehicle Theft Deterrent

WWarn Warningw/ Withw/o WithoutWOT Wide Open Throttle

XXpress Express

YYRS Yaw Rate Sensor

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