Body Control Module (BCM)

Refer to Body Control Module Replacement

Refer to Diagnostic System Check - 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 Starting Point - Instrument Panel, Gages and Console 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.

Heads Up Display (HUD)

Refer to Head Up Display Module Replacement in Instrument Panel, Gages and Console.

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

Refer to Head Up Display Schematics in Instrument Panel, Gages and Console.

Powertrain Control Module (PCM)

Refer to Powertrain Control Module Replacement in Engine Controls-3.1L or Powertrain Control Module Replacement in Engine Controls-3.8L.

Refer to Diagnostic System Check - Engine Controls in Engine Controls-3.1L or Diagnostic System Check - Engine Controls in Engine Controls-3.8L.

Refer to Engine Controls Schematics in Engine Controls-3.1L or Engine Controls Schematics in Engine Controls-3.8L.

Vehicle Interface Unit (VIU)

Refer to OnStar Vehicle Interface Unit Replacement in Cellular Communications.

Refer to Diagnostic System Check - Cellular Communication in Cellular Communications.

Refer to OnStar Schematics in Cellular Communications.

Radio

Refer to Radio Replacement in Entertainment.

Refer to Diagnostic Starting Point - Entertainment in Entertainment.

Refer to Radio/Audio System Schematics in Entertainment.

SIR Sensing and Diagnosis 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.

Theft Deterrent Control Module

Refer to Ignition and Start Switch Replacement in Steering Wheel and Column - Tilt.

Refer to Diagnostic System Check - Theft Deterrent in Theft Deterrent.

Refer to Theft Deterrent System Schematics in Theft Deterrent.