Hummer H2. Manual - part 188

Control Module References 

Control Module

Repair/Reprogramming 

Instruction

Diagnostic System 

Check

Schematic

Audio Amplifier

Refer to Amplifier 
Replacement in Entertainment

Refer to Diagnostic 
System Check - 
Entertainment 
System in 
Entertainment

Refer to Radio/Audio 
System Schematics (non 
Class 2 Amplifier) or 
Radio/Audio System 
Schematics (Class 2 
Amplifier) in 
Entertainment

Body Control 
Module

z

Refer to Body Control 
Module Replacement  

z

Refer to Body Control 
Module (BCM) 
Programming/RPO 
Configuration  

-

Refer to Body Control 
System Schematics

Driver Door 
Module

Refer to Switch Replacement - 
Door Lock and Side Window - 
Driver in Doors

Refer to Diagnostic 
System Check - Door 
Systems in Doors

Refer to Door 
Lock/Indicator 
Schematics in Doors

Driver Seat 
Module

Refer to Memory Seat Control 
Module Replacement in Seats

Refer to Diagnostic 
System Check - 
Power Seat Systems 
in Seats

Refer to Driver Seat 
Schematics in Seats

Electronic Brake 
Control Module

Refer to Electronic Brake 
Control Module Replacement 
in Anti-lock Brake System

Refer to Diagnostic 
System Check - ABS 
in Anti-lock Brake 
System

Refer to ABS Schematics 
in Anti-lock Brake System

Electronic 
Suspension 
Control Module

Refer to Module Assembly 
Electronic Suspension Control 
Replacement in Air Suspension

Refer to Diagnostic 
System Check - Air 
Suspension in Air 
Suspension

Refer to Suspension 
Controls Schematics in 
Air Suspension

Front Passenger 
Door Module

Refer to Switch Replacement - 
Door Lock and Side Window - 
Passenger in Doors

Refer to Diagnostic 
System Check - Door 
Systems in Doors

Refer to Door 
Lock/Indicator 
Schematics in Doors

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 Panel 
Cluster (IPC) Replacement in 

Refer to Diagnostic 
System Check - 

Refer to Instrument 
Cluster Schematics in 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Body Control System - Hummer H2

  

REPAIR INSTRUCTIONS 

BODY CONTROL MODULE REPLACEMENT 

Removal Procedure 

Instrument Panel, Gauges and 
Console

Instrument Cluster in 
Instrument Panel, 
Gauges and Console

Instrument Panel, Gauges 
and Console

Powertrain 
Control Module

z

Refer to Powertrain 
Control Module (PCM) 
Replacement in Engine 
Controls - 4.8L, 5.3L, and 
6.0L  

z

Refer to Service 
Programming System 
(SPS) in Programming  

Refer to Diagnostic 
System Check - 
Engine Controls in 
Engine Controls - 
4.8L, 5.3L, and 6.0L

Refer to Engine Controls 
Schematics in Engine 
Controls - 4.8L, 5.3L, and 
6.0L

Radio

Refer to Radio Replacement in 
Entertainment

Refer to Diagnostic 
System Check - 
Entertainment 
System in 
Entertainment

Refer to Radio/Audio 
System Schematics (non 
Class 2 Amplifier) or 
Radio/Audio System 
Schematics (Class 2 
Amplifier) in 
Entertainment

Rear Seat Audio 
Control

Refer to Audio Control 
Replacement - Rear Seat in 
Entertainment

Refer to Diagnostic 
System Check - 
Entertainment 
System in 
Entertainment

Refer to Radio/Audio 
System Schematics (non 
Class 2 Amplifier) or 
Radio/Audio System 
Schematics (Class 2 
Amplifier) in 
Entertainment

Transfer Case 
Shift Control 
Module

z

Refer to Transfer Case 
Shift Control Module 
Replacement in Transfer 
Case - BW 4484  

z

Refer to Transfer Case 
Control Module 
Reprogramming in 
Transfer Case - BW 4484  

Refer to Diagnostic 
System Check - 
Transfer Case in 
Transfer Case - BW 
4484

Refer to Transfer Case 
Control Schematics in 
Transfer Case - BW 4484

Vehicle 
Communication 
Interface Module

Refer to Communication 
Interface Module Replacement
in Cellular Communications

Refer to Diagnostic 
System Check - 
Cellular 
Communication in 
Cellular 
Communication

Refer to OnStar 
Schematics in Cellular 
Communications

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Body Control System - Hummer H2

  

Fig. 7: Body Control Module 
Courtesy of GENERAL MOTORS CORP. 

1. Disconnect the battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure (Single 

Battery) in Engine Electrical.  

2. Remove the I/P carrier. Refer to Instrument Panel (I/P) Carrier Replacement in Instrument Panel, 

Gauges and Console.  

3. Remove the body control module (1) from the body control module bracket.  

Installation Procedure 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Body Control System - Hummer H2

  

Fig. 8: Body Control Module 
Courtesy of GENERAL MOTORS CORP. 

1. Install the body control module (1) into the bracket.  

2. Install the I/P carrier. Refer to Instrument Panel (I/P) Carrier Replacement in Instrument Panel, 

Gauges and Console.  

3. Connect the battery negative cables. Refer to Battery Negative Cable Disconnect/Connect Procedure 

(Single Battery) in Engine Electrical.  

4. Setup the body control modules customized options. Refer toBody Control Module (BCM) 

Programming/RPO Configuration .  

BODY CONTROL MODULE (BCM) PROGRAMMING/RPO CONFIGURATION 

Introduction 

The procedures below are designed to set-up the body control module (BCM) correctly during BCM related 
service. Before you start, read these procedures carefully and completely. 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Body Control System - Hummer H2