GM Service Manual Online
For 1990-2009 cars only

Control Module

Repair Instructions

Diagnostic System Check

Schematic

Body Control Module

BCM

Refer to Body Control Module Replacement

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Refer to Body Control System Schematics

Instrument Panel Cluster

IPC

Refer to Instrument Cluster Replacement in Instrument Panel, Gauges and Console

Refer to Diagnostic System Check - Instrument Cluster in Instrument Panel, Gauges and Console

Refer to Instrument Cluster Schematics in Instrument Panel, Gauges 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

Transfer Case Shift Control Module

TCSCM

Refer to Transfer Case Shift Control Module Replacement in Transfer Case-NVG 233-NP1 (Two Speed Selectable)

Refer to Diagnostic System Check - Transfer Case in Transfer Case-NVG 233-NP1 (Two Speed Selectable)

Refer to Transfer Case Control Schematics in Transfer Case-NVG 233-NP1 (Two Speed Selectable)

Powertrain Control Module

PCM

    • 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