GM Service Manual Online
For 1990-2009 cars only

Listed below are abbreviations that may appear in this manual.

Abbreviation

Meaning

AF

Alternative Fuels

AF ECU

Alternative Fuels Engine Control Unit

CNG

Compressed Natural Gas

FPS

Fuel Pressure Sensor (1998)

FSU

Fuel Sending Unit (1997)

FTS

Fuel Temperature Sensor (1998)

GDA

Gas Distribution Adapter

GMS/MCV

Gas Mass Sensor/Mixture Control Valve

HPL

High Pressure Lock-off

HPR

High Pressure Regulator

MSV

Manual Shut-off Valve

ORFS

O-ring Face Seal

PRD

Pressure Relief Device