GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Module(s)

B3137

DTC B3137 or B3138

BCM

B3138

DTC B3137 or B3138

BCM

B3147

DTC B3147 or B3148

BCM

B3148

DTC B3147 or B3148

BCM