GM Service Manual Online
For 1990-2009 cars only

Control Module

Repair/Reprogramming Instructions

Diagnostic System Check/Starting Point

Schematic

Body Control Module (BCM)

Refer to:

Refer to Diagnostic Starting Point - Body Control System

Refer to Body Control System Schematics

Driver Information Center (DIC)

Refer to Driver Information Center Module 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 (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

Inflatable Restraint 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

Instrument Panel Cluster (IPC)

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 Seat Module - Driver

Refer to Memory Seat Control Module Replacement in Seats

Refer to Diagnostic System Check - Power Seat Systems in Seats

Refer to Driver Seat Schematics in Seats

Powertrain Control Module (PCM)

Refer to:

    •  Powertrain Control Module Replacement in Engine Controls - 4.3L
    •  Service Programming System (SPS) in Programming

Refer to Diagnostic System Check - Engine Controls in Engine Controls - 4.3L

Refer to Engine Controls Schematics in Engine Controls - 4.3L

Radio

Refer to:

    •  Radio Replacement in Entertainment
    •  Service Programming System (SPS) in Programming

Refer to Diagnostic System Check - Entertainment System in Entertainment

Refer to Radio/Audio System Schematics in Entertainment

Transfer Case Shift Control Module (TCSCM)

Refer to:

    •  Transfer Case Shift Control Module Replacement in Transfer Case - NVG 233-NP1
    •  Transfer Case Shift Control Module Replacement in Transfer Case - NVG 236-NP8

Refer to:

    •  Diagnostic System Check - Transfer Case in Transfer Case - NVG 233-NP1
    •  Diagnostic System Check - Transfer Case in Transfer Case - NVG 236-NP8

Refer to:

    •  Transfer Case Control Schematics in Transfer Case - NVG 233-NP1
    •  Transfer Case Control Schematics in Transfer Case - NVG 236-NP8