Self-Diagnostic System: Notes
WARNING:
Deactivate air bag system before performing any service operation. See appropriate AIR BAG DEACTIVATION PROCEDURES See appropriate AIR BAG DEACTIVATION PROCEDURES article in RESTRAINTS. DO NOT apply electrical power to any component on steering column without first deactivating air bag system. Air bag may deploy.
CAUTION:
When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See appropriate COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.
NOTE:
Diagnostic trouble code tests are written specifically for use with GM Tech I or Tech II scan tools. Generic scan tool can be used but may have limited functions. This article only covers the portion of those systems which relates to starting system diagnosis. For further information, see SELF-DIAGNOSTICS
article in ENGINE PERFORMANCE or appropriate BODY CONTROL MODULES article under COMMUNICATION DEVICES in ACCESSORIES & EQUIPMENT