Common Abbreviations - GMC G Service Manual

COMMON ABBREVIATIONS

Amp. — Ampere(s)
A-6 — Axial 6 Cyl. A/C Compressor
A/C — Air Conditioning
Adj. — Adjust
A/F — Air/Fuel (As in Air/Fuel Ratio)
AIR — Air Injection Reaction System
ALCL — Assembly Line
Communications Link
Alt. — Altitude
APT — Adjustable Part Throttle
AT — Automatic Transmission
ATC — Automatic Temperature Control
ATDC — After Top Dead Center
BARO — Barometric Absolute
Pressure Sensor
Bat. — Battery
Bat. + — Positive Terminal
Bbl. — Barrel
BHP — Brake Horsepower
BP — Back Pressure
BTDC — Before Top Dead Center
Cat. Conv. — Catalytic Converter
CC — Catalytic Converter
— Cubic Centimeter
— Converter Clutch
CCC — Computer Command Control
C-4 — Computer Controlled
Catalytic Converter
CB — Citizens Band (Radio)
CCOT — Cycling Clutch (Orifice) Tube
CCP — Controlled Canister Purge
C.E. — Check Engine
CEAB — Cold Engine Airbleed
CEMF — Counter Electromotive Force
CID — Cubic Inch Displacement
CL — Closed Loop
CLCC — Closed Loop Carburetor Control
CLTBI — Closed Loop Throttle Body
Injection
Conv. — Converter
CP — Canister Purge
Cu. In. — Cubic Inch
CV — Constant Velocity
Cyl. — Cylinder(s)
DBB — Dual Bed Bead
DBM — Dual Bed Monolith
DEFI — Digital Electronic Fuel Injection
DFI — Digital Fuel Injection
Diff. — Differential
Dist. — Distributor
EAC — Electric Air Control Valve
EAS — Electric Air Switching Valve
ECC — Electronic Comfort Control
ECM — Electronic Control Module
ECS — Emission Control System
ECU — Engine Calibration Unit
EEC — Evaporative Emission Control
GENERAL INFORMATION OA-19
LIST OF AUTOMOTIVE ABBREVIATIONS
WHICH MAY BE USED IN THIS MANUAL
EEVIR — Evaporator Equalized Valves
in Receiver
EFE — Early Fuel Evaporation
EFI — Electronic Fuel Injection
EGR — Exhaust Gas Recirculation
EMF — Electromotive Force
EMR — Electronic Module Retard
EOS — Exhaust Oxygen Sensor
ESC — Electronic Spark Control
EST — Electronic Spark Timing
ETR — Electronically Tuned Receiver
Exh. — Exhaust
FMVSS — Federal Motor Vehicle
Safety Standards
Ft. Lb. — Foot Pounds (Torque)
FWD — Four Wheel Drive
4x4 — Four Wheel Drive
HD — Heavy Duty
HEI — High Energy Ignition
Hg. — Mercury
Hi. Alt. — High Altitude
HVAC — Heater-Vent-Air Conditioning
HVACM — Heater-Vent-Air
Conditioning Module
HVM — Heater-Vent-Module
IAC — Idle Air Control
1C — Integrated Circuit
ID — Identification
— Inside Diameter
ILC — Idle Load Compensator
IP — Instrument Panel
ISC — Idle Speed Control
km — Kilometers
km/h — Kilometers Per Hour
KV — Kilovolts (Thousands of Volts)
km/L — Kilometers/Liter (mpg)
kPa — Kilopascals
L — Liter
L-4 — Four Cylinder In-Line (Engine)
L-6 — Six Cylinder In-Line (Engine)
LF — Left Front
LR — Left Rear
Man. Vac. — Manifold Vacuum
MAP — Manifold Absolute Pressure
MAT — Manifold Air Temperature Sensor
M/C — Mixture Control
MPG — Miles Per Gallon
MPH — Miles Per Hour
MT — Manual Transmission
N«m — Newton Metres (Torque)
OD — Outside Diameter
OHC — Overhead Cam
OL — Open Loop
0 2 — Oxygen
PAIR — Pulse Air Injection Reaction System
P/B — Power Brakes
PCV — Positive Crankcase Ventilation
PECV — Power Enrichment Control Valve
P/N — Park, Neutral
PROM — Programmable, Read Only
Memory
P/S — Power Steering
PSI — Pounds Per Square Inch
Pt. — Pint
PTO — Power Takeoff
Qt. — Quart
R — Resistance
R-4 — Radial Four Cyl. A/C Compressor
RF — Right Front
RPM — Revolutions Per Minute
RR — Right Rear
RTV — Room Temperature Vulcanizing
(Sealer)
RVR — Response Vacuum Reducer
RWD — Rear Wheel Drive
SAE — Society of Automotive Engineers
SI — System International
Sol. — Solenoid
T — Turbocharger
TAC — Thermostatic Air Cleaner
TACH — Tachometer
TBI — Throttle Body Injection
TCC — Transmission Converter Clutch
TCS — Transmission Controlled Spark
TDC — Top Dead Center
TPS — Throttle Position Sensor
Turbo — Turbocharger
TV — Throttle Valve
TVBV — Turbocharger Vacuum Bleed Valve
TVRS — Television & Radio Suppression
TVS — Thermal Vacuum Switch
U-Joint — Universal Joint
V - Volt(s)
V-6 — Six Cylinder Engine — Arranged
in a "V"
V-8 — Eight Cylinder Engine — Arranged
in a "V"
Vac. — Vacuum
VATS — Vehicle Anti-Theft System
VIN — Vehicle Identification Number
VIR — Valves in Receiver
VSS — Vehicle Speed Sensor
VMV — Vacuum Modulator Valve
W/ — With
W/B — Wheel Base
W/O — Without
WOT — Wide Open Throttle
X-Valve — Expansion Valve
GMTB-0307-2L