For 1990-2009 cars

Abbreviation | Meaning
--- | ---
A
A | Ampere(s)
ABS | Antilock Brake System
A/C | Air Conditioning
AC | Alternating Current
ACC | Accessory, Automatic Climate Control
ACL | Air Cleaner
ACM | Air Conditioning Module
ACR4 | Air Conditioning Refrigerant, Recovery, Recycling, Recharging
AD | Automatic Disconnect
A/D | Analog to Digital
ADL | Automatic Door Lock
A/F | Air/Fuel Ratio
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
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
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
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
DOHC | Dual Overhead Camshafts
DPM | Driver Position Module
DR, Drvr | Driver
DRL | Daytime Running Lamps
DSCC | Distance Sensing Cruise Control
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
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
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
HCM | HVAC Control Module
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
ITCM | Integrated Transmission Control Module
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
N
NAES | North American Export Sales
NC | Normally Closed
NEG | Negative
Neu | Neutral
NI | Neutral Idle
NiMH | Nickel Metal Hydride
NLGI | National Lubricating Grease Institute
N·m | Newton-meter Torque
NO | Normally Open
NOx | Oxides of Nitrogen
NPTC | National Pipe Thread Coarse
NPTF | National Pipe Thread Fine
NOVRAM | Non-Volatile Random Access Memory
O
O2 | Oxygen
O2S | Oxygen Sensor
OBD | On-Board Diagnostics
OBD II | On-Board Diagnostics Second Generation
OC | Oxidation Converter Catalytic
OCS | Opportunity Charge Station
OD | Outside Diameter
ODM | Output Drive Module
ODO | Odometer
OE | Original Equipment
OEM | Original Equipment Manufacturer
OHC | Overhead Camshaft
Ω | Ohm
OL | Open Loop, Out of Limits
ORC | Oxidation Reduction Converter Catalytic
ORN | Orange
ORVR | On-Board Refueling Vapor Recovery
OSS | Output Shaft Speed
oz | Ounce(s)
P
PAG | Polyalkylene Glycol
PAIR | Pulsed Secondary Air Injection
PASS, PSGR | Passenger
PASS-Key® | Personalized Automotive Security System
P/B | Power Brakes
PC | Pressure Control
PCB | Printed Circuit Board
PCM | Powertrain Control Module
PCS | Pressure Control Solenoid
PCV | Positive Crankcase Ventilation
PEB | Power Electronics Bay
PID | Parameter Identification
PIM | Power Inverter Module
PM | Permanent Magnet Generator
P/N | Part Number
PNK | Pink
PNP | Park/Neutral Position
PRNDL | Park, Reverse, Neutral, Drive, Low
POA | Pilot Operated Absolute Valve
POS | Positive, Position
POT | Potentiometer Variable Resistor
PPL | Purple
ppm | Parts per Million
PROM | Programmable Read Only Memory
P/S, PS | Power Steering
PSCM | Power Steering Control Module, Passenger Seat Control Module
PSD | Power Sliding Door
PSP | Power Steering Pressure
psi | Pounds per Square Inch
psia | Pounds per Square Inch Absolute
psig | Pounds per Square Inch Gauge
pt | Pint
PTC | Positive Temperature Coefficient
PWM | Pulse Width Modulated
Q
QDM | Quad Driver Module
qt | Quart(s)
R
R-12 | Refrigerant-12
R-134a | Refrigerant-134a
RAM | Random Access Memory, Non-permanent memory device, memory contents are lost when power is removed.
RAP | Retained Accessory Power
RAV | Remote Activation Verification
RCDLR | Remote Control Door Lock Receiver
RDCM | Right Door Control Module
Ref | Reference
Rev | Reverse
REX | Rear Exchanger
RIM | Rear Integration Module
RF | Right Front, Radio Frequency
RFA | Remote Function Actuation
RFI | Radio Frequency Interference
RH | Right Hand
RKE | Remote Keyless Entry
Rly | Relay
ROM | Read Only Memory, Permanent memory device, memory contents are retained when power is removed.
RPM | Revolutions per Minute Engine Speed
RPO | Regular Production Option
RR | Right Rear
RSS | Road Sensing Suspension
RTD | Real Time Damping
RT | Right
RTV | Room Temperature Vulcanizing Sealer
RWAL | Rear Wheel Antilock
RWD | Rear Wheel Drive
S
s | Second(s)
SAE | Society of Automotive Engineers
SC | Supercharger
SCB | Supercharger Bypass
SCM | Seat Control Module
SDM | Sensing and Diagnostic Module
SEO | Special Equipment Option
SFI | Sequential Multiport Fuel Injection
SI | System International Modern Version of Metric System
SIAB | Side Impact Air Bag
SIR | Supplemental Inflatable Restraint
SLA | Short/Long Arm Suspension
sol | Solenoid
SO2 | Sulfur Dioxide
SP | Splice Pack
S/P | Series/Parallel
SPO | Service Parts Operations
SPS | Service Programming System, Speed Signal
sq ft, ft² | Square Foot/Feet
sq in, in² | Square Inch/Inches
SRC | Service Ride Control
SRI | Service Reminder Indicator
SRS | Supplemental Restraint System
SS | Shift Solenoid
ST | Scan Tool
STID | Station Identification Station ID
S4WD | Selectable Four-Wheel Drive
Sw | Switch
SWB | Short Wheel Base
SWPS | Steering Wheel Position Sensor
syn | Synchronizer
T
TAC | Throttle Actuator Control
Tach | Tachometer
TAP | Transmission Adaptive Pressure, Throttle Adaptive Pressure
TBI | Throttle Body Fuel Injection
TC | Turbocharger, Transmission Control
TCC | Torque Converter Clutch
TCS | Traction Control System
TDC | Top Dead Center
TEMP | Temperature
Term | Terminal
TFP | Transmission Fluid Pressure
TFT | Transmission Fluid Temperature
THM | Turbo Hydro-Matic
TIM | Tire Inflation Monitoring, Tire Inflation Module
TOC | Transmission Oil Cooler
TP | Throttle Position
TPA | Terminal Positive Assurance
TPM | Tire Pressure Monitoring, Tire Pressure Monitor
TR | Transmission Range
TRANS | Transmission/Transaxle
TT | Tell Tail Warning Lamp
TV | Throttle Valve
TVRS | Television and Radio Suppression
TVV | Thermal Vacuum Valve
TWC | Three Way Converter Catalytic
TWC+OC | Three Way + Oxidation Converter Catalytic
TXV | Thermal Expansion Valve
U
UART | Universal Asynchronous Receiver Transmitter
U/H | Underhood
U/HEC | Underhood Electrical Center
U-joint | Universal Joint
UTD | Universal Theft Deterrent
UV | Ultraviolet
V
V | Volt(s), Voltage
V6 | Six-Cylinder Engine, V-Type
V8 | Eight-Cylinder Engine, V-Type
Vac | Vacuum
VAC | Vehicle Access Code
VATS | Vehicle Anti-Theft System
VCIM | Vehicle Communication Interface Mode
VCM | Vehicle Control Module
V dif | Voltage Difference
VDOT | Variable Displacement Orifice Tube
VDV | Vacuum Delay Valve
vel | Velocity
VES | Variable Effort Steering
VF | Vacuum Fluorescent
VIO | Violet
VIN | Vehicle Identification Number
VLR | Voltage Loop Reserve
VMV | Vacuum Modulator Valve
VR | Voltage Regulator
V ref | Voltage Reference
VSES | Vehicle Stability Enhancement System
VSS | Vehicle Speed Sensor
W
w/ | With
W/B | Wheel Base
WHL | Wheel
WHT | White
w/o | Without
WOT | Wide Open Throttle
W/P | Water Pump
W/S | Windshield
WSS | Wheel Speed Sensor
WU-OC | Warm Up Oxidation Converter Catalytic
WU-TWC | Warm Up Three-Way Converter Catalytic
X
X-valve | Expansion Valve
Y
yd | Yard(s)
YEL | Yellow