GM Service Manual Online
For 1990-2009 cars only

Control Module

Repair Instructions

Diagnostic System Check

Schematics

Audio Amplifier

Refer to Radio Speaker Amplifier Replacement in Entertainment.

Refer to Diagnostic System Check - Entertainment System in Entertainment.

Refer to Radio/Audio System Schematics in Entertainment.

Body Control Module

Refer to Body Control Module Replacement

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Refer to Body Control System Schematics

Driver Door Module

Refer to Door Lock and Side Window Switch Replacement - Driver Side in Doors.

Refer to Diagnostic System Check - Door Systems in Doors.

Refer to Door Control Module Schematics in Doors.

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.

Front Passenger Door Module

Refer to Door Lock and Side Window Switch Replacement - Passenger Side in Doors.

Refer to Diagnostic System Check - Door Systems in Doors.

Refer to Door Control Module Schematics in Doors.

HVAC Control Module

Refer to:

    •  HVAC Control Module Replacement in HVAC Systems - Manual
    •  HVAC Control Module Replacement in HVAC Systems - Automatic

Refer to

    •  Diagnostic System Check - HVAC Systems - Manual in HVAC Systems - Manual
    •  Diagnostic System Check - HVAC Systems - Automatic in HVAC Systems - Automatic

Refer to

    •  HVAC Schematics in HVAC Systems - Manual
    •  HVAC Schematics in HVAC Systems - 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.

Liftgate Control Module

Refer to Liftgate Control Module Replacement in Body Rear End.

Refer to Diagnostic System Check - Body Rear End in Body Rear End.

Refer to Body Rear End Schematics in Body Rear End.

Memory Seat Module - Driver and Passenger

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 - 4.2L.

Refer to Diagnostic System Check - Engine Controls in Engine Controls - 4.2L.

Refer to Engine Controls Schematics in Engine Controls - 4.2L.

Radio

Refer to Radio Replacement in Entertainment.

Refer to Diagnostic System Check - Entertainment System in Entertainment.

Refer to Radio/Audio System Schematics in Entertainment.

Rear Climate Control

Refer to:

Refer to:

    •  Diagnostic System Check - HVAC Systems - Manual in HVAC Systems - Manual
    •  Diagnostic System Check - HVAC Systems - Automatic in HVAC Systems - Automatic

Refer to:

    •  HVAC Schematics in HVAC Systems - Manual
    •  HVAC Schematics in HVAC Systems - Automatic

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 Assembly Replacement in Transfer Case - NVG-126-NP4
    •  Input Shaft Seal Replacement in Transfer Case - NVG-226-NP8

Refer to:

    •  Diagnostic System Check - Transfer Case in Transfer Case - NVG-126-NP4
    •  Diagnostic System Check - Transfer Case in Transfer Case - NVG-226-NP8

Refer to:

    •  Transfer Case Control Schematics in Transfer Case - NVG-126-NP4
    •  Transfer Case Control Schematics in Transfer Case - NVG-226-NP8

Vehicle Communication Interface Module

Refer to Communication Interface Module Replacement in Cellular Communication

Refer to Diagnostic System Check - Cellular Communication in Cellular Communication

Refer to OnStar Schematics in Cellular Communication