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

Digital Radio Receiver

Digital Radio Receiver Replacement in Entertainment

Diagnostic System Check - Entertainment System in Entertainment

Radio/Audio System Schematics in Entertainment

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

Driver Seat Module

Memory Seat Control Module Replacement in Seats

Diagnostic System Check - Power Seat Systems in Seats

Driver Seat Schematics in Seats

Electro Hydraulic Power Steering Module

Power Steering Pump Replacement in Power Steering System

Diagnostic System Check - Power Steering System in Power Steering System

Power Steering Schematics in Power Steering System

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

Energy Storage Control Module

Generator Battery Control Module Replacement in Engine Electrical

Diagnostic System Check - Engine Electrical in Engine Electrical

Starting and Charging Schematics in Engine Electrical

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

Fuel Injector Control Module

    •  Fuel Injector Control Module Replacement in Engine Controls - 6.6L (LB7)
    •  Fuel Injector Control Module Replacement in Engine Controls - 6.6L (LLY)
    •  Diagnostic System Check - Engine Controls in Engine Controls - 6.6L (LB7)
    •  Diagnostic System Check - Engine Controls in Engine Controls - 6.6L (LLY)
    •  Engine Controls Schematics in Engine Controls - 6.6L (LB7)
    •  Engine Controls Schematics in Engine Controls - 6.6L (LLY)

Glow Plug Control Module

Glow Plug Controller Replacement in Engine Controls - 6.6L (LLY)

    •  Diagnostic System Check - Engine Controls in Engine Controls - 6.6L (LB7)
    •  Diagnostic System Check - Engine Controls in Engine Controls - 6.6L (LLY)
    •  Engine Controls Schematics in Engine Controls - 6.6L (LB7)
    •  Engine Controls Schematics in Engine Controls - 6.6L (LLY)

HVAC Control Module

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

Hybrid Control Module

Powertrain Control Interface Module Replacement in Engine Electrical

Diagnostic System Check - Engine Electrical in Engine Electrical

Starting and Charging Schematics in Engine Electrical

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

Powertrain/Engine Control Module

    •  Powertrain Control Module Replacement in Engine Controls - 4.3L
    •  Powertrain Control Module Replacement in Engine Controls - 4.8L, 5.3L, and 6.0L
    •  Engine Control Module Replacement in Engine Controls - 6.6L (LB7)
    •  Engine Control Module Replacement in Engine Controls - 6.6L (LLY)
    •  Powertrain Control Module Replacement in Engine Controls - 8.1L, and Service Programming System (SPS) in Programming
    •  Diagnostic System Check - Engine Controls in Engine Controls - 4.3L
    •  Diagnostic System Check - Engine Controls in Engine Controls - 4.8L, 5.3L, and 6.0L
    •  Diagnostic System Check - Engine Controls in Engine Controls - 6.6L (LB7)
    •  Diagnostic System Check - Engine Controls in Engine Controls - 6.6L (LLY)
    •  Diagnostic System Check - Engine Controls in Engine Controls - 8.1L
    •  Engine Controls Schematics in Engine Controls - 4.3L
    •  Engine Controls Schematics in Engine Controls - 4.8L, 5.3L, and 6.0L
    •  Engine Controls Schematics in Engine Controls - 6.6L (LB7)
    •  Engine Controls Schematics in Engine Controls - 6.6L (LLY)
    •  Engine Controls Schematics in Engine Controls - 8.1L

Radio

Radio Replacement in Entertainment

Diagnostic System Check - Entertainment System in Entertainment

Radio/Audio System Schematics in Entertainment

Rear Seat Audio Controller

Rear Seat Audio Control Replacement in Entertainment

Diagnostic System Check - Entertainment System in Entertainment

Radio/Audio System Schematics in Entertainment

Rear Seat Entertainment Assembly

Video Disc Player Replacement in Entertainment

Diagnostic System Check - Entertainment System in Entertainment

Video System Schematics in Entertainment

Rear Wheel Steering Control Module

Rear Wheel Steering Control Module Replacement in Rear Wheel Steering

Diagnostic System Check - Rear Wheel Steering in Rear Wheel Steering

Rear Wheel Steering Schematics in Rear Wheel Steering

Remote Playback Device - CD Player

Remote Compact Disc Player Replacement in Entertainment

Diagnostic System Check - Entertainment System in Entertainment

Radio/Audio System Schematics in Entertainment

Starter/Generator Control Module

Generator Control Module Replacement in Engine Electrical

Diagnostic System Check - Engine Electrical in Engine Electrical

Starting and Charging Schematics in Engine Electrical

Transfer Case Shift Control Module

    •  Transfer Case Shift Control Module Replacement in Transfer Case - NVG 246-NP8
    •  Transfer Case Shift Control Module Replacement in Transfer Case - NVG 263-NP1
    •  Diagnostic System Check - Transfer Case in Transfer Case - NVG 246-NP8
    •  Diagnostic System Check - Transfer Case in Transfer Case - NVG 263-NP1
    •  Transfer Case Control Schematics in Transfer Case - NVG 246-NP8
    •  Transfer Case Control Schematics in Transfer Case - NVG 263-NP1

Transmission Control Module

Transmission Control Module Replacement , and Transmission Control Module Reprogramming in Automatic Transmission - Allison

Diagnostic System Check - Automatic Transmission in Automatic Transmission - Allison

Automatic Transmission Controls Schematics in Automatic Transmission - Allison

Vehicle Communication Interface Module

Communication Interface Module Replacement in Cellular Communication

Diagnostic System Check - Cellular Communication in Cellular Communication

OnStar Schematics in Cellular Communication