GM Service Manual Online
For 1990-2009 cars only

Control Module

Repair Instructions

Diagnostic System Check

Schematics

Body Control Module

Refer to Body Control Module Replacement

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Refer to Body Control System Schematics

Driver Information Center

Refer to Driver Information Center Replacement in Instrument Panel, Gages and Console

Refer to Diagnostic System Check - Driver Information Systems in Instrument Panel, Gages and Console

Refer to Driver Information System Schematics in Instrument Panel, Gages and Console

Electronic Brake Control Module

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

Electronic Suspension Control Module

Refer to Electronic Suspension Control Module Replacement in Real Time Damping (RTD)

Refer to Diagnostic System Check - Real Time Damping in Real Time Damping (RTD)

Refer to Suspension Controls Schematics in Real Time Damping (RTD)

HVAC Control Module

Refer to HVAC Control Module Replacement in HVAC - Automatic

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

Refer to HVAC Schematics in HVAC - Automatic

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

Instrument Panel Cluster

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

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

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

Memory Mirror Module

Refer to Accessory and Outside Rearview Mirror Module Replacement in Doors

Refer to Diagnostic System Check - Door Systems in Doors

Refer to Outside Rearview Mirror Schematics in Doors

Memory Seat Module

Refer to Memory Seat Control Module Replacement in Seats

Refer to Diagnostic System Check - Power Seat Systems in Seats

Refer to Memory Seats Schematics in Seats

Powertrain Control Module

    • Refer to Powertrain Control Module Replacement in Engine Controls 4.8L, 5.3L, and 6.0L
    • Refer to Powertrain Control Module Replacement in Engine Controls 8.1L
    • Refer to Diagnostic System Check - Engine Controls in Engine Controls 4.8L, 5.3L, and 6.0L
    • Refer to Diagnostic System Check - Engine Controls in Engine Controls 8.1L
    • Refer to Engine Controls Schematics in Engine Controls 4.8L, 5.3L, and 6.0L
    • Refer to Engine Controls Schematics in Engine Controls 8.1L

Theft Deterrent Control Module

Refer to Theft Deterrent Module Replacement in Theft Deterrent Immobilizer

Refer to Diagnostic System Check - Theft Deterrent in Theft Deterrent Immobilizer

Refer to Theft Deterrent System Schematics in Theft Deterrent Immobilizer

Transfer Case Shift Control Module

Refer to Transfer Case Shift Control Module Replacement in Transfer Case - NVG 236/246 - NP8 (Two Speed Automatic)

Refer to Diagnostic System Check - Transfer Case in Transfer Case - NVG 236/246 - NP8 (Two Speed Automatic)

Refer to Transfer Case Control Schematics in Transfer Case - NVG 236/246 - NP8 (Two Speed Automatic)

Vehicle Interface Unit

Refer to OnStar Vehicle Interface Unit Replacement in Cellular Communications

Refer to Diagnostic System Check - Cellular Communication in Cellular Communications

Refer to OnStar Schematics in Cellular Communications