GM Service Manual Online
For 1990-2009 cars only

Control Module

Repair Instructions

Diagnostic System Check

Schematic

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 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

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

HVAC Control Module

Refer to HVAC Control Module Replacement in HVAC Systems - Automatic

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

Refer to 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

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 Memory Seats Schematics in Seats

Powertrain Control Module

    • Refer to Powertrain Control Module Replacement in Engine Controls - 2.2L
    • Refer to Powertrain Control Module Replacement in Engine Controls - 4.3L
    • Refer to Diagnostic System Check - Engine Controls in Engine Controls - 2.2L
    • Refer to Diagnostic System Check - Engine Controls in Engine Controls - 4.3L
    • Refer to Engine Controls Schematics in Engine Controls - 2.2L
    • Refer to Engine Controls Schematics in Engine Controls - 4.3L

Transfer Case Shift Control Module

    •  Transfer Case Shift Control Module Replacement in Transfer Case - NVG 233 - NP1 (Two Speed Selectable)
    •  Transfer Case Shift Control Module Replacement in Transfer Case - NVG 236/246 - NP8 (Two Speed Automatic)
    •  Diagnostic System Check - Transfer Case in Transfer Case - NVG 233 - NP1 (Two Speed Selectable)
    •  Diagnostic System Check - Transfer Case in Transfer Case - NVG 236/246 - NP8 (Two Speed Automatic)
    •  Transfer Case Control Schematics in Transfer Case - NVG 233 - NP1 (Two Speed Selectable)
    •  Transfer Case Control Schematics in Transfer Case - NVG 236/246 - NP8 (Two Speed Automatic)