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Control Module References

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2005 Isuzu Ascender, 2005 GMC Envoy XUV, 2005 GMC Envoy XL, 2005 GMC Envoy, and 2005 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Control Module References

Control Module Schematic Repair Instruction Programming and Setup
Audio Amplifier Radio/Audio System Schematics in Entertainment Amplifier Replacement (Envoy XL, TrailBlazer EXT) or Amplifier Replacement (Envoy XUV) or Amplifier Replacement (Rainier, Envoy, Trailblazer) in Entertainment This device requires no programming or setup
Body Control Module Body Control System Schematics  Body Control Module Replacement  Body Control Module Programming and Setup
Communications Interface Module (OnStar®) OnStar Schematics in Cellular Communication Communication Interface Module Replacement (TrailBlazer EXT, Envoy XL) or Communication Interface Module Replacement (Trailblazer, Envoy, Rainier) in Cellular Communication OnStar Reconfiguration (Gen 6) or OnStar Reconfiguration (Gen 6.1) in Cellular Communication after communications interface module replacement
Digital Radio Receiver (DRR) Radio/Audio System Schematics in Entertainment Receiver Replacement - Digital Radio in Entertainment Digital Radio Receiver Setup in Entertainment after DRR replacement
Electronic Brake Control Module (ABS) ABS Schematics in Antilock Brake System Electronic Brake Control Module Replacement in Antilock Brake System Electronic Brake Control Module Programming and Setup
Engine Control Module Engine Controls Schematics in Engine Controls - 5.3L Engine Control Module (ECM) Replacement in Engine Controls - 5.3L Engine Control Module Programming and Setup
Garage Door Opener (GDO) Garage Door Opener Schematics in Garage Door Opener Garage Door Opener Replacement in Garage Door Opener Garage Door Opener Programming - Universal in Garage Door Opener after GDO replacement
HVAC Control Module (w/CJ2) (Heating and Air Conditioning) HVAC Schematics in HVAC Systems - Automatic HVAC Control Module Replacement in HVAC Systems - Automatic HVAC Control Module Programming and Setup
HVAC Control Module - Auxiliary (w/CJ2) (Heating and Air Conditioning) HVAC Schematics in HVAC Systems - Automatic HVAC Control Module Replacement - Auxiliary in HVAC Systems - Automatic HVAC Control Module Programming and Setup - Auxiliary
HVAC Control Module (w/CJ3) (Heating and Air Conditioning) HVAC Schematics in HVAC Systems - Manual HVAC Control Module Replacement in HVAC Systems - Manual HVAC Control Module Programming and Setup
HVAC Control Module - Auxiliary (w/CJ3) (Heating and Air Conditioning) HVAC Schematics in HVAC Systems - Manual HVAC Control Module Replacement - Auxiliary in HVAC Systems - Manual HVAC Control Module Programming and Setup - Auxiliary
Inflatable Restraint Sensing and Diagnostic Module (Supplemental Inflatable Restraint) SIR Schematics in SIR Inflatable Restraint Sensing and Diagnostic Module Replacement in SIR Inflatable Restraint Sensing and Diagnostic Module Programming and Setup
Inside Rearview Mirror Inside Rearview Mirror Schematics in Stationary Windows Rearview Mirror Replacement in Stationary Windows Compass Calibration and Variance Procedure in Stationary Windows after inside rearview mirror replacement
Instrument Panel Cluster (IPC) Instrument Cluster Schematics in Instrument Panel, Gages, and Console Instrument Panel Cluster (IPC) Replacement in Instrument Panel, Gages, and Console Service Programming System (SPS) after IPC replacement
Liftgate Control Module Body Rear End Schematics in Body Rear End Liftgate Control Module Replacement in Body Rear End Lift Gate Control Module Programming and Setup
Memory Seat Control Module (Driver Seat Module) Driver Seat Schematics in Seats Memory Seat Control Module Replacement in Seats Memory Seat Calibration Procedure in Seats after MSM replacement
Module Rear Body Control - Endgate (Endgate Module) Body Rear End Schematics in Body Rear End Module Rear Body Control Replacement - Endgate in Body Rear End Window Learn Cycle - Endgate in Body Rear End
Moveable Roof Control Module (Power Roof Module) Retractable Roof Schematics in Roof Moveable Roof Panel Control Module Replacement in Roof Roof Moveable Panel Control Module Calibration Procedure in Roof after moveable roof control module replacement
Passenger Presence System SIR Schematics in SIR Inflatable Restraint Passenger Presence System Replacement - Front in SIR Passenger Presence System Programming and Setup
Powertrain Control Module Engine Controls Schematics in Engine Controls - 4.2L Powertrain Control Module (PCM) Replacement in Engine Controls - 4.2L Powertrain Control Module Programming and Setup
Radio Radio/Audio System Schematics in Entertainment Radio Replacement in Entertainment Radio Programming and Setup
Sunroof Motor/Actuator Power Sunroof Schematics in Roof Sunroof Motor/Actuator Replacement in Roof Power Sunroof Calibration Procedure in Roof after sunroof motor/actuator replacement
Switch - Door Lock and Side Window - Driver (Driver Door Module) Door Control Module Schematics in Doors Switch Replacement - Door Lock and Side Window - Driver in Doors Refer to Service Programming System (SPS) after DDM replacement
Switch - Door Lock and Side Window - Passenger (Passenger Door Module) Door Control Module Schematics in Doors Switch Replacement - Door Lock and Side Window - Passenger in Doors Refer to Service Programming System (SPS) after PDM replacement
Theft Deterrent Control Module (Some Export Vehicles) Theft Deterrent System Schematics in Theft Deterrent - Immobilizer - Some Export Vehicles Theft Deterrent Control Module Replacement in Theft Deterrent - Immobilizer - Some Export Vehicles Theft Deterrent Control Module Programming and Setup - Immobilizer
Transfer Case Shift Control Module Transfer Case Control Schematics in Transfer Case - NVG 126-NP4 or Transfer Case Control Schematics in Transfer Case - NVG 266-NP8 Transfer Case Shift Control Module Replacement in Transfer Case - NVG 126-NP4 or Transfer Case Shift Control Module Replacement in Transfer Case - NVG 266-NP8 Transfer Case Control Module Programming and Setup
Transmission Control Module Automatic Transmission Controls Schematics (4.2L) or Automatic Transmission Controls Schematics (5.3L) in Automatic Transmission - 4L60-E/4L65-E Transmission Control Module (TCM) Replacement in Automatic Transmission - 4L60-E/4L65-E Transmission Control Module Programming and Setup