GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Module(s)

B1245

DTC B1245

Radio

B1271

DTC B1271

Radio

B1760

DTC B1760

Radio

B1780

DTC B1780

Radio

B2511

DTC B2511

IPC

B2515

DTC B2515

IPC