GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Module(s)

B1000

DTC B1000

BCM, DIC, EBCM, IPC, OnStar Module, PCM, Radio, SDM

B1007

DTC B1007

Radio

B1009

DTC B1009

OnStar Module, Radio

B1339

DTC B1339

BCM

B1349

DTC B1349

BCM

B1440

DTC B1440

BCM

B1507

DTC B1507 or B1508

BCM

B1508

DTC B1507 or B1508

BCM

C0550

DTC C0550

EBCM