GM Service Manual Online
For 1990-2009 cars only

Control Module

Repair/Reprogramming Instructions

Diagnostic System Check

Schematics

Audio Amplifier

Radio Speaker Amplifier Replacement in Entertainment

Diagnostic System Check - Entertainment System in Entertainment

Radio/Audio System Schematics in Entertainment

Body Control Module

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Body Control System Schematics

Driver Door Module

Door Lock and Side Window Switch Replacement - Driver Side in Doors

Diagnostic System Check - Door Systems in Doors

Door Control Module Schematics in Doors

Electronic Brake Control Module

Electronic Brake Control Module Replacement in Antilock Brake System

Diagnostic System Check - ABS in Antilock Brake System

Antilock Brake System Schematics in Antilock Brake System

Front Passenger Door Module

Door Lock and Side Window Switch Replacement - Passenger Side in Doors

Diagnostic System Check - Door Systems in Doors

Door Control Module Schematics in Doors

HVAC Control Module

    •  HVAC Control Module Replacement in HVAC - Manual
    •  HVAC Control Module Replacement in HVAC - Automatic
    •  Diagnostic System Check - HVAC Systems - Automatic in HVAC - Automatic
    •  HVAC Schematics in HVAC - Manual
    •  HVAC Schematics in HVAC - Automatic

Inflatable Restraint Sensing and Diagnostic Module

Inflatable Restraint Sensing and Diagnostic Module Replacement in SIR

Diagnostic System Check - SIR in SIR

SIR Schematics in SIR

Instrument Panel Cluster

Instrument Cluster Replacement in Instrument Panel, Gages and Console

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

Instrument Cluster Schematics in Instrument Panel, Gages and Console

Liftgate Module

Liftgate Control Module Replacement in Body Rear End

Diagnostic System Check - Body Rear End in Body Rear End

Body Rear End Schematics in Body Rear End

Memory Seat Module

Driver and Passenger

Memory Seat Control Module Replacement in Seats

Diagnostic System Check - Power Seat Systems in Seats

Memory Seats Schematics in Seats

Powertrain Control Module

    •  Powertrain Control Module Replacement in Engine Controls - 4.2L
    •  Powertrain Control Module Replacement in Engine Controls - 4.8L, 5.3L, 6.0L
    •  Service Programming System (SPS) in Programming
    •  Diagnostic System Check - Engine Controls in Engine Controls - 4.2L
    •  Diagnostic System Check - Engine Controls in Engine Controls - 4.8L, 5.3L, 6.0L
    •  Engine Controls Schematics in Engine Controls - 4.2L
    •  Engine Controls Schematics in Engine Controls - 4.8L, 5.3L, 6.0L

Radio

Radio Replacement in Entertainment

Diagnostic System Check - Entertainment System in Entertainment

Radio/Audio System Schematics in Entertainment

Rear Climate Control

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

Theft Deterrent Control Module

    •  Theft Deterrent Module Replacement in Theft Deterrent - Immobilizer
    •  Programming Theft Deterrent System Components in Theft Deterrent - Immobilizer

Diagnostic System Check - Theft Deterrent in Theft Deterrent - Immobilizer

Theft Deterrent System Schematics in Theft Deterrent - Immobilizer

Transfer Case Shift Control Module

    •  Transfer Case Shift Control Module Replacement in Transfer Case - NVG 126-NP4
    •  Transfer Case Shift Control Module Replacement in Transfer Case - NVG 226-NP8
    •  Transfer Case Shift Control Module Reprogramming in Transfer Case - NVG 126-NP4
    •  Transfer Case Shift Control Module Reprogramming in Transfer Case - NVG 226-NP8
    •  Diagnostic System Check - Transfer Case in Transfer Case - NVG 126-NP4
    •  Diagnostic System Check - Transfer Case in Transfer Case - NVG 226-NP8
    •  Transfer Case Control Schematics in Transfer Case - NVG 126-NP4
    •  Transfer Case Control Schematics in Transfer Case - NVG 226-NP8

Vehicle Communication Interface Module

Communication Interface Module Replacement in Cellular Communications

Diagnostic System Check - Cellular Communication in Cellular Communications

OnStar Schematics in Cellular Communications