GM Service Manual Online
For 1990-2009 cars only

Control Module

Repair Instructions

Diagnostic System Check

Schematic

BCM (Body Control Module)

Refer to Body Control Module Replacement in Body Control System

Refer to Diagnostic System Check - Body Control System in Body Control System

Refer to Body Control System Schematics in Body Control System

EBCM (Electronic Brake Control Module)

Refer to Electronic Brake Control Module Replacement in Antilock Brake Systems

Refer to Diagnostic System Check - ABS in Antilock Brake System

Refer to Antilock Brake System Schematics in Antilock Brake System

PCM (Powertrain Control Module)

Refer to Powertrain Control Module Replacement/Programming in Engine Controls - 3.1 L

Refer to Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 3.1 L

Refer to Engine Controls Schematics in Engine Controls - 3.1 L

SDM (Inflatable Restraint Sensing and Diagnostic Module)

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