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Acronyms and Abbreviations
The product engineering division of General Motors Service and Parts Operations offers for your reference the
following 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, or
click on the Adobe Reader binocular “Search” icon
(usually located on the toolbar near the top of your screen)
and enter the exact term.
Term
Definition
Term
Definition
2HI
2LO
2WD
2WS
3GR
4GR
4HI
4LO
4WAL
4WD
4WS
Two-Wheel Drive High Range
Two-Wheel Drive Low Range
Two-Wheel Drive
Two-Wheel Steer
Third Gear
Fourth Gear
Four-Wheel Drive High Range
Four-Wheel Drive Low Range
Four-Wheel Antilock
Four-Wheel Drive
Four-Wheel Steer
Accel
Accum
Acc
ACL
ACM
Act
Actv
A/D
AD
Adapt
Adapts
ADG
Adj
ADL
ADS
A/F
AFECM
Acceleration
Accumulator
Accessory
Air Cleaner
Air Conditioning Module
Actual
Activate, activated, active
Analog to Digital
Accommodated Device
Adaptive
Adaptation values, adapters
Accommodated Device Gateway
Adjust, adjustable
Automatic Door Lock
Auxiliary Discriminating Sensor
Air/Fuel Ratio
Alternative Fuel Engine Control Module
A
AAT
ABS
A/C
ACC
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Ambient Air Temperature
Antilock Brake System
Air Conditioning
Adaptive Cruise Control
2006
Acronyms & Abbreviations
1
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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Term
Definition
Term
Definition
AFO
AFS
Aft
AHLD
Ahrs
AIR
ALC
Alternative Fuel Operation
Adaptive Forward Lighting System
After, aft (rear)
Automatic Headlamp Leveling Device
Amp hours
Secondary Air Injection
Automatic Lamp Control
Automatic Level Control
Assembly Line Diagnostic Link
Automatic Level Module
Alternative
Amplitude Modulation
Amplifier
Amperage
Accessory Power Module
Auxiliary Power Outlet
Accelerator Pedal Position
Application
April
Adaptive Receptive System
Air Suspension
Air Suspension Control Module
Assembly
Alarm Siren Module
Automatic (radio) Station Memory
Air Suspension Module
ASR
A/T
ATC
Acceleration Slip Regulation
Automatic Transmission
Active Transfer Case
Automatic Transfer Case
Automatic Transmission Fluid
August
Automatic
Auxiliary
Average
All-Wheel Drive
ALDL
ALM
Alt
AM
Amp
Amps
APM
APO
APP
Appl
Apr
ARS
AS
ASCM
Asm
ASM
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ATF
Aug
Auto
Aux
Avg
AWD
B
B+
BARO
BAS
BASS
Batt
BBV
BCM
BCO
BECM
BFC
blts
BLW
Bn
BPCM
Battery Positive Voltage
Barometric Pressure
Brake Apply Sensor
Brake Apply Sensing System
Battery
Brake Booster Vacuum
Body Control Module
Battery Cutoff
Battery Energy Control Module
Body Function Controller
Belts
Brake Lining Wear
Bank
Battery Pack Control Module
2006
Acronyms & Abbreviations
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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Term
Definition
Term
Definition
BPMV
BPP
BTCM
BTSI
Brake Pressure Modulator Valve
Brake Pedal Position
Brake Torque Control Module
Brake Transmission Shift Interlock
Cmd
Cmmd
CMP
CNG
CO
CO2
Combo
Comm
Compl
Cond
Config
COP
CPC
CPP
CPS
CRV
CTD
CTP
Ctrl
Ctsy
CVRSS
Command
Commanded
Crankshaft Position
Compressed Natural Gas
Carbon Monoxide
Carbon Dioxide
Combination
Communication
Complete, completed
Condition
Configuration
Computer Operating Properly
Clutch Pressure Control
Clutch Pedal Position
Childseat Positioning Sensor
Coolant Recovery Check Valve
Content Theft Deterrent
Closed Throttle Position
Control
Courtesy
Continuously Variable Road Sensing
Suspension
Continuously Variable Real Time Damping
Continuously Variable Transmission
Continuously Variable Transaxle
Cylinder
C
CAC
Cal
Calc
CAN
CANdi
CASE
Cass
C/C
CC
CCM
CCW
CD
CDX
Ch
CIM
CKP
Ckt
CL
cm
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Charged Air Cooler
Calibration
Calculated
Controller Area Network
Controller Area Network Diagnostic
Interface
Crankshaft Angle Sense Error
Cassette
Cruise Control
Climate Control
Central Control Module
Counter Clockwise
Compact Disc
Compact Disc Changer
Chapter
Control Integration Module
Crankshaft Position
Circuit
Closed Loop
Centimeter
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CVRTD
CVT
Cyl
2006
Acronyms & Abbreviations
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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Term
Definition
Term
Definition
Drive
Delayed Accessory Bus
Decibels
Decibel Meter
Duty Cycle
Door Control Module
Driver Door Module
Driver Door Switch
Deactivation
Decrement, December
Deceleration
Defrost
Defogger
Degrees
Degrees Celsius
Degrees Fahrenheit
Delivered
Diagnostic Energy Reserve Module
Desired
Description, descriptor
Decel Fuel Cut-Off
Distributor Ignition
Diagnostic
Driver Information Center
Diff
Dig
DIM
Dis
Discon
Discrim
Disp
DLC
DMCM
DMM
DNR
DOHC
Dol
DPM
DPVD
Dr
DRL
DRP
DRR
Drvr
DSCC
DSM
DSP
DTC
DVD
Dwn
Differential
Digit
Dash Integration Module
Disable
Disconnect
Discriminating
Display
Data Link Connector
Drive Motor Control Module
Digital Multimeter
Dolby Noise Reduction
Dual Overhead Cam
Dolby
Driver Position Module
Disc Player and Video Display
Door
Daytime Running Lights
Dynamic Rear Proportion
Digital Radio Receiver
Driver
Distance Sensing Cruise Control
Driver Seat Module
Digital Signal Process
Diagnostic Trouble Code
Digital Video Disc
Down
D
D
DAB
dB
dBm
DC
DCM
DDM
DDS
Deact
Dec
Decel
Def
Defog
deg
deg C
deg F
Del
DERM
Des
Desc
DFCO
DI
Diag
DIC
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2006
Acronyms & Abbreviations
4
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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Term
Definition
E
E&C
EBCM
EBM
EBTCM
EC
ECC
ECL
ECM
Econ
ECT
ECU
EEPROM
EFS
EGR
EHCU
EHPS
EI
Elec
EMB
Enab
Eng
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Entertainment and Comfort
Electronic Brake Control Module
Electronic Brake Module
Electronic Brake and Traction Control
Module
Engine Control
Electronic Climate Control
Engine Coolant Level
Electronic Control Module
Engine Control Module
Economy
Engine Coolant Temperature
Electronic Control Unit
Electrically Erasable Programmable ReadOnly Memory
Electronic Front End Sensor
Exhaust Gas Recirculation
Electric Hydraulic Control Unit
Electronic Hydraulic Power Steering
Electronic Ignition
Electric
Electromagnetic Brake
Enable, enabled
Engine
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Term
Definition
EOP
EOT
EPM
EPR
EPS
EQ
ERH
ESB
ESC
ESD
ESM
ESN
ESO
EST
Est
ETC
Engine Oil Pressure
Engine Oil Temperature
Energy Power Management
Exhaust Pressure Regulator
Electric Power Steering
Equalizer
Extended Ride Height
Expansion Spring Brake
Electronic Suspension Control
Electrostatic Discharge
Electronic Steering Module
Electronic Serial Number
Engine Shut-Off
Electronic Spark Timing
Estimated
Electronic Temperature Control
Electronic Throttle Control
Electronic Timing Control
Enhanced Traction System
Electric Vehicle
Evaporative Emission
Evaporator, evaporation
Electronic Variable Orifice
Exhaust
External, exterior, extended
ETS
EV
EVAP
Evap
EVO
Exh
Ext
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Acronyms & Abbreviations
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Term
Definition
F
F4WD
FC
Fdbk
FE
Feb
FEDS
FEIC
FET
FICM
Filt
FL
Flr
FM
FP
FPR
FR
Freq
Frnt
FRP
FT
FTC
FTP
ft-lbs
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Full-time Four-Wheel Drive
Fan Control
Feedback
Fuel Economy
February
Fuel Enable Data Stream
Fuel Economy Integrated Counter
Field Effect Transistor
Fuel Injector Control Module
Filter
Front Left
Floor
Frequency Modulation
Fuel Pump
Fuel Pressure Regulator
Front Right
Frequency
Front
Fuel Rail Pressure
Fuel Trim
Folding Top Controller
Fuel Tank Pressure
Foot-pounds
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Term
Definition
Fwd
FWD
Forward
Front-Wheel Drive
G
g/cyl
GEN
Gnd
GPCM
GPS
GS
GVW
Grams per Cylinder
Generator
Ground
Glow Plug Control Module
Global Positioning System
Garage Shift
Gross Vehicle Weight
H
HC
HCM
HD
Hdlp
HI
HID
Hist
HO2S
Horiz
HPCM
hr
hrs
Hydrocarbon(s)
Heating Control Module
Heavy Duty
Headlamp
High
High Intensity Discharge
History
Heated Oxygen Sensor
Horizontal
Hybrid Powertrain Control Module
Hour
Hours
2006
Acronyms & Abbreviations
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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Term
Definition
Term
Definition
HSM
HTCM
Htr
HUD
HV
HVAC
HVC
HVSM
H/W
HW
Hz
Heated Seat Module
HVAC Thermal Control Module
Heater
Head-Up Display
Heated/Vented
Heating Ventilation Air Conditioning
Heated/Vented/Cooled
Heated Ventilated Seat Module
Hardware
Heated Windshield
Hertz
IMDX
Immo
IMRC
IMT
in
Inadv
Inc
Incand
Ind
Infl
Info
Init
Inj
Inst
Int
I/O
I/P
IPC
IPM
Inval
IRQ
ISC
Iso
ISP
ISS
ISU
Integrated Mini Disc Changer
Immobilizer
Intake Manifold Runner Control
Intake Manifold Tuning
Inch(es)
Inadvertent
Increment
Incandescent
Indicator
Inflatable
Information
Initial
Injector
Instant
Intake, interior, internal
In/out, input/output
Instrument Panel
Instrument Panel Cluster
Instrument Panel Module
Invalid
Interrupt Request
Idle Speed Control
Isolation
Internet Service Provider
Input Shaft Speed
Intelligent Switching Unit
I
IA
IAC
IAT
IC
ICCS
ICDX
ICM
ICS
ID
Ign
Illum
I/M
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Intake Air
Idle Air Control
Intake Air Temperature
Ignition Control
Integrated Chassis Control System
Integrated Compact Disc Changer
Ignition Control Module
Integrated Chassis System
Identification
Ignition
Illumination
Inspection and Maintenance
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2006
Acronyms & Abbreviations
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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Term
Definition
J
Jan
Jul
Jun
January
July
June
K
KAM
KDD
kg
kg/h
km
km/h
km/l
kPa
KS
Keep Alive Memory
Keyboard Display Driver
Kilogram(s)
Kilograms per Hour
Kilometer
Kilometer per Hour
Kilometer per Liter
Kilopascal
Knock Sensor
L
lbs
LCD
LCM
LD
LDCL
LDCM
Lduty
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Term
Definition
LED
LEV
LF
LFWS
LGM
LH
LMD
LO
LPG
LPS
L/R
LR
LRD
LRDM
Lrn
Lt
LTPWS
Lvl
Light Emitting Diode
Low Emission Vehicle
Left Front
Left Front Wheel Speed
Lift Gate Module
Left Hand
Left Mid Door
Low
Liquefied Petroleum Gas
Low Pressure Sensor
Left/Right
Left Rear
Left Rear Door
Left Rear Door Module
Learn
Left, light
Low Tire Pressure Warning System
Level
Pounds
Liquid Crystal Display
Lighting Control Module
Light Duty
Left Door Close Locking
Left Door Control Module
Light Duty
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2006
Acronyms & Abbreviations
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Term
Definition
M
MAF
Malf
MALL
Man
Manufact
MAP
Mar
MAT
Max
MCU
MD
MDM
MDX
Med
Mem
MFD
MFI
Mgmt
Mid
MIL
min
Min
MIN
mm
mmHg
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Mass Airflow
Malfunction
Multifunction Alarm Lighting and Locking
Manual
Manufacture
Manifold Absolute Pressure
March
Manifold Air Temperature
Maximum
Microprocessor Control Unit
Mini Disc
Mobile Digital Media
Mini Disc Changer
Medium
Memory
Multi-Functional Display
Multiport Fuel Injector
Management
Middle range, midway
Malfunction Indicator Lamp
Minute(s)
Minimum
Mobile Identification Number
Millimeter(s)
Millimeters of Mercury
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Term
Definition
MMM
Mod
Mon
mpg
mph
ms
Msg
MSM
MSVA
M/T
Mtr
Mult
MUX
Memory Mirror Module
Module
Monitor
Miles per Gallon
Miles per Hour
Millisecond(s)
Message
Memory Seat Module
Magnetic Steering Variable Assist
Manual Transmission
Motor
Multiple
Multiplexer
N
N
N/mm
Nav
NDH
NGO
NI
NID
NiMH
No
Nov
NOx
Neutral
Newtons per millimeter
Navigation
Navigation Display Head
Natural Gas Operation
Neutral Idle
Network Identification
Nickel Metal Hydride
Number
November
Nitrogen Oxides
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Acronyms & Abbreviations
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Term
Definition
Term
Definition
NR
NV
NVRAM
Noise Reduction
Night Vision
Non-Volatile Random Access Memory
PCM
PCMCIA
Powertrain Control Module
Personal Computer Memory Card Industry
Association
Pressure Control Solenoid
Positive Crankcase Ventilation
Pressure Differential
Passenger Door Module
Passenger Door Switch
Power Electronics Bay
Performance
Phone
Parameter Identification
Powertrain Interface Module
Personal Identification Number
Phase Locked Loop
Pressure Modulator Valve
Park/Neutral Position
Position
Passenger Presence Sensing
Pressure
Pretensioner
Previous
Primary
Preferred Roaming List
Power Roof Module
Park, Reverse, Neutral, Drive, Low
O
O2
O2S
OAT
OBD
OBPA
OCS
Oct
ODM
OEM
Orig
OSC
Overtemp
OSS
Oxygen
Oxygen Sensor
Outside Air Temperature
On-Board Diagnostic
Off-Board Programming Adapter
Occupant Classification System
October
Output Driver Module
Original Equipment Manufacturer
Original
Oxygen Storage Capacity
Over Temperature
Output Shaft Speed
P
P
Parms
PC
Pass
PCB
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Park
Parameters
Pressure Control (solenoid valve)
Passenger
Printed Circuit Board
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PCS
PCV
PDIF
PDM
PDS
PEB
Perf
Phn
PID
PIM
PIN
PLL
PMV
PNP
Pos
PPS
Press
Preten
Prev
Prim
PRL
PRM
PRNDL
2006
Acronyms & Abbreviations
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Term
Definition
Term
Definition
Prog
PROM
PS
PSCM
PSD
PSDM
Psgr
psi
PSIR
Program
Programmable Read-Only Memory
Power Steering
Passenger Seat Control Module
Power Sliding Door
Power Sliding Door Module
Passenger
Pounds per Square Inch
Passenger Supplemental Inflatable
Restraint
Passenger Seat Module
Power Steering Pressure
Power Take Off
Pulse Width Modulation
Power
Partial Zero Emission Vehicle
Platform Zone Module
RAP
RCC
RCDLR
RDCM
RDM
Retained Accessory Power
Rear Climate Control
Remote Control Door Lock Receiver
Right Door Control Module
Rear Door Module
Roof and Door Module
Radio Display System
Receive
Recalibration
Receptacle
Recirculation
Recline
Reference
Refrigeration
Regenerate
Request, requested
Resistance
Resynchronize
Reverse
Right Front
Radio Frequency
Remote Function Actuator
Radio Frequency Interference
Right Front Wheel Speed
Right Hand
Rear Heated Seat Module
PSM
PSP
PTO
PWM
Pwr
PZEV
PZM
Q
QDM
Quad Drive Module
R
R
R/A
RAC
RAM
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Reverse
Resume or Accelerate
Remote Accessory Controller
Random Access Memory
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RDS
Rec
Recal
Recep
Recirc
Recl
Ref
Refrig
Regen
Req
Resist
Resync
Rev
RF
RFA
RFI
RFWS
RH
RHSM
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Acronyms & Abbreviations
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Term
Definition
Term
RIM
Radio Interface Module
Rear Integration Module
Remote Keyless Entry
Right/Left
Right Mid Door
Read-Only Memory
Rear Parking Assist
Revolutions Per Minute
Regular Production Option
Right Rear
Right Rear Door
Right Rear Door Module
Rear Seat Audio
Rear Seat Entertainment
Road Sensing Suspension
Right
Real-Time Clock
Real-Time Damping
Reconfigurable Telltale
Rear Video/Audio/HVAC Module
Rear Voltage Control
Regulated Voltage Control
Remote Vehicle Start
Rear-Wheel Antilock
Rear-Wheel Drive
Rear-Wheel Steering
S
RKE
R/L
RMD
ROM
RPA
RPM
RPO
RR
RRD
RRDM
RSA
RSE
RSS
Rt
RTC
RTD
RTT
RVAC
RVC
RVS
RWAL
RWD
RWS
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s
SARVC
SAS
SBM
SBT
SC
SCB
SCLM
SCV
SDG
SDL
SDM
Sec
Sen
Sep
Seq
Ser
SFI
SGCM
SID
Sig
SIR
SIS
Definition
Second(s)
Stand-Alone Regulated Voltage Control
Module
Steering Angle Sensor
Standard Body Module
Service Bay Test
Supercharger
Supercharger Bypass
Steering Column Lock Module
Speed Controlled Volume
Serial Data Gateway
Serial Data Link
Sensing and Diagnostic Module
Secondary
Sensor
September
Sequence
Serial
Sequential Fuel Injection
Starter Generator Control Module
Station Identification
Signal
Supplemental Inflatable Restraint
Side Impact Sensor
2006
Acronyms & Abbreviations
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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Term
Definition
Term
SMCC
SOD
SOH
Sol
SOPS
Spd
Speedo
SPI
SPS
SS
Steper Motor Cruise Control
Side Object Direction
State of Health
Solenoid
Sunroof Opening Position Switch
Speed
Speedometer
Serial Peripheral Interface
Service Programming System
Speed Signal
Shift Solenoid
Speed Sensitive Steering
Shift Solenoid Valve
Standby
Service Transmission Lamp
Sport Utility Vehicle
Service Vehicle Soon!
Software
Switch
Steering Wheel Controls
Switzerland
Steering Wheel Position Sensor
Serial Transmit and Receive
Synchronize
System
T
SSS
SSV
Stdby
STL
SUV
SVS
S/W
Sw
SWC
Switz
SWPS
SXR
Sync
Sys
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TA
TAC
Tach
TAP
TAS
TAV
TBC
TBI
TC
TCC
TCCM
TCM
TCS
TCSC
TDC
TDM
Tele
Temp
TFP
TFT
TIM
TIS
Torq
Definition
Traffic Announcement
Throttle Actuator Control
Tachometer
Transmission Adaptive Pressure
Throttle Adaptive Pressure
Trap Alert System
Transmission Adaptive Volume
Truck Body Controller
Throttle Body Fuel Injection
Turbocharger
Torque Converter Clutch
Transfer Case Control Module
Transmission Control Module
Traction Control System
Techline Customer Support Center
Top Dead Center
Theft Deterrent Module
Telescope
Temperature
Transmission Fluid Pressure
Transmission Fluid Temperature
Tire Inflation Monitor
Techline Information System
Torque
2006
Acronyms & Abbreviations
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Term
Definition
Term
TP
TPM
TPS
TR
Trac
Trans
Transp
Trk
TSS
TT
TTM
TV
TVAM
TVT
TVV
TWC
Twtr
Throttle Position
Tire Pressure Monitor
Throttle Position Switch
Transmission Range
Traction
Transmission
Transponder
Truck
Turbine Shaft Speed
Telltale Lamp
Tilt and Telescope Module
Television
Television Antenna Module
Television Tuner
Thermal Vacuum Valve
Three-Way Catalytic Converter
Tweeter
V
U
UART
ULEV
Unlk
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Universal Asynchronous Receiver
Transmitter
Ultra-Low Emission Vehicle
Unlock
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V
Vac
Val
VATS
VCI
VCIM
VCM
VCS
VDR
Veh
Ver
Vert
VES
VF
VICS
VIN
VIU
Vlv
VR
VSES
Vspd
Definition
Volt(s)
Vacuum
Valve
Vehicle Anti-Theft System
Vehicle Communication Interface
Vehicle Communication Interface Module
Vehicle Control Module
Vehicle Communication System
Vehicle Dealer Recorder
Vehicle
Vertical, version
Vertical
Variable Effort Steering
Vacuum Fluorescent
Vehicle Information Communication
System
Vehicle Identification Number
Vehicle Interface Unit
Valve
Voltage Regulator
Vehicle Stability Enhancement System
Vehicle Speed
2006
Acronyms & Abbreviations
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Term
Definition
VSS
VSV
VTD
Vehicle Speed Sensor
Vacuum Solenoid Valve
Vehicle Theft Deterrent
W
Warn
w/
w/o
WOT
Warning
With
Without
Wide Open Throttle
X
Xpress
Express
Y
YRS
Yaw Rate Sensor
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2006
Acronyms & Abbreviations
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