GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Module(s)

DTC 001

Refer to Diagnostic Trouble Code (DTC) List in Seat Belts

BCM

DTC 002

Refer to Diagnostic Trouble Code (DTC) List in Lighting Systems

BCM

DTC 003

Refer to Diagnostic Trouble Code (DTC) List in Lighting Systems

BCM

DTC 004

Refer to Diagnostic Trouble Code (DTC) List in Retained Accessory Power

BCM

DTC 006

Refer to Diagnostic Trouble Code (DTC) List in Theft Deterrent

BCM

DTC 007

Refer to Diagnostic Trouble Code (DTC) List in Horns

BCM

DTC 008

Refer to Diagnostic Trouble Code (DTC) List in Keyless Entry

BCM