GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Module(s)

Important: Unless otherwise directed by the Diagnostic System Check diagnose all Bxxxx Codes prior to diagnosing any Pxxxx codes.

B1015

DTC B1015

VTD

B1016

DTC B1016

VTD

B3031

DTC B3031

VTD

B3055

DTC B3055

VTD

B3060

DTC B3060

VTD

B3069

DTC B3064 or B3069 in Doors

Door Modules

B3935

DTC B3935

VTD

B3976

DTC B3976

VTD

P1629

DTC P1629

ECM

P1630

DTC P1630

ECM

P1631

DTC P1631

ECM

Pxxxx

Pxxxx other ECM DTCs

Refer to Diagnostic Trouble Code (DTC) List in Engine Controls 2.6L and 3.2L

ECM