GM Service Manual Online
For 1990-2009 cars only

Control Module

Repair Instruction

Diagnostic System Check

Schematic

Powertrain Control Module (PCM)

Refer to Powertrain Control Module Replacement in Engine Electrical

Refer to Diagnostic System Check - Engine Controls in Engine Electrical

Refer to Engine Controls Schematics in Engine Electrical

Automatic Heater-A/C Control

Refer to HVAC Control Module Replacement in HVAC Systems-Automatic

Refer to Diagnostic System Check - HVAC Systems - Automatic in HVAC Systems-Automatic

Refer to HVAC Schematics in HVAC Systems-Automatic

Electronic Brake Control Module (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

SIR Sensing and Diagnostic Module (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

Body Control Module (BCM)

Refer to Body Control Module Replacement in Body Control System

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Refer to Body Control System Schematics in Body Control System

Instrument Cluster (IPC)

Refer to Instrument Cluster Replacement in Instrument Panel, Gauges and Console

Refer to Diagnostic System Check - Instrument Cluster in Instrument Panel, Gauges and Console

Refer to Instrument Cluster Schematics in Instrument Panel, Gauges and Console