GM Service Manual Online
For 1990-2009 cars only

Control Module

Repair Instructions

Diagnostic System Check

Schematic

EBCM

Refer to Electronic Brake Control Module Replacement in Antilock Brake System

Refer to Diagnostic System Check - ABS in Antilock Brake System

Refer to Antilock Brake System Schematics in Antilock Brake System

PCM

Refer to Powertrain Control Module Replacement/Programming in Engine Controls

Refer to Powertrain On Board Diagnostic (OBD) System Check in Engine Controls

Refer to Engine Controls Schematics in Engine Controls

SDM

Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement in SIR

Refer to Diagnostic System Check - SIR in SIR

Refer to SIR Schematics in SIR