GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Modules

C0263

DTC C0163 or C0164

EBCM

C0264

DTC C0163 or C0164

EBCM

C0267

DTC C0267

EBCM

C0272

DTC C0272

EBCM

C0285

DTC C0285

EBCM

C0286

DTC C0286 or C086

EBCM