Control Module References

WARNING: This page is about a different car, the 2004 GMC Safari and 2004 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

Control Module	Repair Instructions	Diagnostic System Check/Starting Point	Schematic
Body Control Module (BCM)	Refer to Body Control Module Replacement	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 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 ABS 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 Panel Cluster (IPC) 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
Powertrain Control Module (PCM)	Refer to Powertrain Control Module (PCM) Replacement in Engine Controls - 4.3L	Refer to Diagnostic System Check - Engine Controls in Engine Controls - 4.3L	Refer to Engine Controls Schematics in Engine Controls - 4.3L
Transfer Case Shift Control Module (TCSCM)	Refer to Transfer Case Shift Control Module Replacement in Transfer Case - NVG 136-NP4 (One Speed Automatic)	Refer to Diagnostic System Check - Transfer Case in Transfer Case-NVG 136-NP4 (One Speed Automatic)	Refer to Transfer Case Control Schematics in Transfer Case-NVG 136-NP4 (One Speed Automatic)