GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Module(s)

B2558

DTC B2558 in Lighting Systems

BCM

B2613

DTC B2613 in Lighting Systems

BCM

B2627

DTC B2627 in Lighting Systems

BCM

B2647

DTC B2647 in Lighting Systems

BCM

B2648

DTC B2648 in Lighting Systems

BCM

B3948

DTC B3948 in Lighting Systems

BCM

B3949

DTC B3949 in Lighting Systems

BCM

B3950

DTC B3950 in Lighting Systems

BCM

B3951

DTC B3951 in Lighting Systems

BCM

BXXXX

Refer to Diagnostic Trouble Code (DTC) List in SIR

SDM

CXXXX

Refer to Diagnostic Trouble Code (DTC) List in Antilock Brake System

EBCM

P0461

DTC P0461

ECM

P0462

DTC P0462

ECM

P0463

DTC P0463

ECM

P0520

DTC P0520

ECM

P0705

DTC P0705 in Automatic Transaxle -- AF23-5

DTC P0705 in Automatic Transaxle -- VT25-E

ECM

PXXXX

Refer to Diagnostic Trouble Code (DTC) List in Engine Controls.

ECM