Acronym List (GM and Common Automotive)

Acronym List (GM and Common Automotive) Part 1

A
A Ampere(s)
ABS Antilock Brake System
A/C Air Conditioning
AC Alternating Current
ACC Accessory, Automatic Climate Control
ACL Air Cleaner
ACR4 Air Conditioning Refrigerant, Recovery, Recycling, Recharging
AD Automatic Disconnect
A/D Analog to Digital
ADL Automatic Door Lock
A/F Air/Fuel Ratio
AGM Absorption Glass Mat
AH Active Handling
AIR Secondary Air Injection
ALC Automatic Level Control, Automatic Lamp Control
AM/FM Amplitude Modulation/Frequency Modulation
Ant Antenna
AP Accelerator Pedal
APCM Accessory Power Control Module
API American Petroleum Institute
APP Accelerator Pedal Position
APT Adjustable Part Throttle
ASM Assembly, Accelerator and Servo Control Module
ASR Acceleration Slip Regulation
A/T Automatic Transmission/Transaxle
ATC Automatic Transfer Case, Automatic Temperature Control
ATDC After Top Dead Center
ATSLC Automatic Transmission Shift Lock Control
Auto Automatic
avg Average
A4WD Automatic Four-Wheel Drive
AWG American Wire Gage

B
B+ Battery Positive Voltage
BARO Barometric Pressure
BATT Battery
BBV Brake Booster Vacuum
BCA Bias Control Assembly
BCM Body Control Module
BHP Brake Horsepower
BLK Black
BLU Blue
BP Back Pressure
BPCM Battery Pack Control Module
BPMV Brake Pressure Modulator Valve
BPP Brake Pedal Position
BRN Brown
BTDC Before Top Dead Center
BTM Battery Thermal Module
BTSI Brake Transmission Shift Interlock
Btu British Thermal Units

C
°C Degrees Celsius
CAC Charge Air Cooler
CAFE Corporate Average Fuel Economy
CAN Controller Area Network
Cal Calibration
Cam Camshaft
CARB California Air Resources Board
CC Coast Clutch
cm³ Cubic Centimeters
CCM Convenience Charge Module, Chassis Control Module
CCOT Cycling Clutch Orifice Tube
CCP Climate Control Panel
CD Compact Disc
CE Commutator End
CEAB Cold Engine Air Bleed
CEL - Check Engine Light
CEMF Counter Electromotive Force
CEX Cabin Exchanger
cfm Cubic Feet per Minute
cg Center of Gravity
CID Cubic Inch Displacement
CKP Crankshaft Position
CKT Circuit
C/Ltr Cigar Lighter
CL Closed Loop
CLS Coolant Level Switch
CMC Compressor Motor Controller
CMP Camshaft Position
CNG Compressed Natural Gas
CO Carbon Monoxide
CO2 Carbon Dioxide
Coax Coaxial
COMM Communication
Conn Connector
CPA Connector Position Assurance
CPP Clutch Pedal Position
CPS Central Power Supply
CPU Central Processing Unit
CRT Cathode Ray Tube
CRTC Cathode Ray Tube Controller
CS Charging System
CSFI Central Sequential Fuel Injection
CTP Closed Throttle Position
cu ft Cubic Foot/Feet
cu in Cubic Inch/Inches
CV Constant Velocity Joint
CVRSS Continuously Variable Road Sensing Suspension
CVT Continuously Variable Transmission
Cyl Cylinder(s)

D
DAB Delayed Accessory Bus
dB Decibels
dBA Decibels on A-weighted Scale
DC Direct Current, Duty Cycle
DCM Door Control Module
DE Drive End
DEC Digital Electronic Controller
DERM Diagnostic Energy Reserve Module
DI Distributor Ignition
dia Diameter
DIC Driver Information Center
Diff Differential
DIM Dash Integration Module
DK Dark
DLC Data Link Connector
DMCM Drive Motor Control Module
DMM Digital Multimeter
DMSDS Drive Motor Speed and Direction Sensor
DMU Drive Motor Unit
DoD Displacement on Demand
DOHC Dual Overhead Camshafts
DPM Driver Position Module
DR, Drvr Driver
DRL Daytime Running Lamps
DTC Diagnostic Trouble Code

E
EBCM Electronic Brake Control Module
EBTCM Electronic Brake and Traction Control Module
EC Electrical Center, Engine Control
ECC Electronic Climate Control
ECI Extended Compressor at Idle
ECL Engine Coolant Level
ECM Engine Control Module, Electronic Control Module
ECS Emission Control System
ECT Engine Coolant Temperature
ECU Electronic Control Unit
EEPROM Electrically Erasable Programmable Read Only Memory
EEVIR Evaporator Equalized Values in Receiver
EFE Early Fuel Evaporation
EGR Exhaust Gas Recirculation
EGR TVV Exhaust Gas Recirculation Thermal Vacuum Valve
EHPS Electro-Hydraulic Power Steering
EI Electronic Ignition
ELAP Elapsed
ELC Electronic Level Control
E/M English/Metric
EMF Electromotive Force
EMI Electromagnetic Interference
Eng Engine
EOP Engine Oil Pressure
EOT Engine Oil Temperature
EPA Environmental Protection Agency
EPR Exhaust Pressure Regulator
EPROM Erasable Programmable Read Only Memory
ESB Expansion Spring Brake
ESC Electronic Suspension Control
ESD Electrostatic Discharge
ESN Electronic Serial Number
ETC Electronic Throttle Control, Electronic Temperature Control, Electronic Timing Control
ETCC Electronic Touch Climate Control
ETR Electronically Tuned Receiver
ETS Enhanced Traction System
EVAP Evaporative Emission
EVO Electronic Variable Orifice
Exh Exhaust

F
°F Degrees Fahrenheit
FC Fan Control
FDC Fuel Data Center
FED Federal All United States except California
FEDS Fuel Enable Data Stream
FEX Front Exchanger
FF Flexible Fuel
FFH Fuel-Fired Heater
FI Fuel Injection
FMVSS Federal U.S. Motor Vehicle Safety Standards
FP Fuel Pump
ft Foot/Feet
FT Fuel Trim
F4WD Full Time Four-Wheel Drive
4WAL Four-Wheel Antilock
4WD Four-Wheel Drive
FW Flat Wire
FWD Front Wheel Drive, Forward

G
g Grams, Gravitational Acceleration
GA Gage, Gauge
gal Gallon
gas Gasoline
GCW Gross Combination Weight
Gen Generator
GL Gear Lubricant
GM General Motors
GMLAN General Motors Local Area Network
GM SPO General Motors Service Parts Operations
gnd Ground
gpm Gallons per Minute
GRN Green
GRY Gray
GVWR Gross Vehicle Weight Rating

H
H Hydrogen
H2O Water
Harn Harness
HC Hydrocarbons
H/CMPR High Compression
HD Heavy Duty
HDC Heavy Duty Cooling
hex Hexagon, Hexadecimal
Hg Mercury
Hi Alt High Altitude
HO2S Heated Oxygen Sensor
hp Horsepower
HPL High Pressure Liquid
HPS High Performance System
HPV High Pressure Vapor
HPVS Heat Pump Ventilation System
Htd Heated
HTR Heater
HUD Head-up Display
HVAC Heater-Ventilation-Air Conditioning
HVACM Heater-Vent-Air Conditioning Module
HVIL High Voltage Interlock Loop
HVM Heater Vent Module
Hz Hertz

I
IAC Idle Air Control
IAT Intake Air Temperature
IC Integrated Circuit, Ignition Control
ICCS Integrated Chassis Control System
ICM Ignition Control Module
ID Identification, Inside Diameter
IDI Integrated Direct Ignition
IGBT Insulated Gate Bi-Polar Transistor
ign Ignition
ILC Idle Load Compensator
in Inch/Inches
INJ Injection
inst Instantaneous, Instant
IP Instrument Panel
IPC Instrument Panel Cluster
IPM Instrument Panel Module
I/PEC Instrument Panel Electrical Center
ISC Idle Speed Control
ISO International Standards Organization
ISS Input Speed Shaft, Input Shaft Speed

K
KAM Keep Alive Memory
KDD Keyboard Display Driver
kg Kilogram
kHz Kilohertz
km Kilometer
km/h Kilometers per Hour
km/l Kilometers per Liter
kPa Kilopascals
KS Knock Sensor
kV Kilovolts

L
L Liter
L4 Four Cylinder Engine, In-Line
L6 Six-Cylinder Engine, In-Line
lb Pound
lb ft Pound Feet Torque
lb in Pound Inch Torque
LCD Liquid Crystal Display
LDCL Left Door Closed Locking
LDCM Left Door Control Module
LDM Lamp Driver Module
LED Light Emitting Diode
LEV Low Emissions Vehicle
LF Left Front
lm Lumens
LR Left Rear
LT Left
LT Light
LT Long Term
LTPI Low Tire Pressure Indicator
LTPWS Low Tire Pressure Warning System
LWB Long Wheel Base

M
MAF Mass Air Flow
Man Manual
MAP Manifold Absolute Pressure
MAT Manifold Absolute Temperature
max Maximum
M/C Mixture Control
MDP Manifold Differential Pressure
MFI Multiport Fuel Injection
mi Miles
MIL Malfunction Indicator Lamp
min Minimum
MIN Mobile Identification Number
mL Milliliter
mm Millimeter
mpg Miles per Gallon
mph Miles per Hour
ms Millisecond
MST Manifold Surface Temperature
MSVA Magnetic Steering Variable Assist, Magnasteer®
M/T Manual Transmission/Transaxle
MV Megavolt
mV Millivolt