Hummer H2. Manual - part 2221

3. Install the air lines. Refer to Air Suspension Air Line Replacement .  

4. Install the compressor assembly to the vehicle. Refer to Compressor Assembly Automatic Level 

Control Air Replacement .  

MODULE ASSEMBLY ELECTRONIC SUSPENSION CONTROL REPLACEMENT 

Removal Procedure 

1. Remove the compressor assembly from the vehicle and place on a bench. Refer to Compressor 

Assembly Automatic Level Control Air Replacement . 

CAUTION: Do NOT remove an air supply pipe in an attempt to depressurize the air 

suspension. Always follow the Air Suspension Depressurization 
Procedure in Air Suspension. Failure to follow this procedure may cause 
personal injury or damage to the vehicle.

 

2004 Hummer H2 

2004 SUSPENSION Air Suspension - Hummer H2

  

Fig. 22: Control Module & Bracket 
Courtesy of GENERAL MOTORS CORP. 

2. Disconnect the electrical connection (2).  

3. Remove the control module from the bracket.  

Installation Procedure 

 

2004 Hummer H2 

2004 SUSPENSION Air Suspension - Hummer H2

  

Fig. 23: Control Module & Bracket 
Courtesy of GENERAL MOTORS CORP. 

1. Install the control module to the bracket.  

2. Connect the electrical connection (2)  

3. Install the compressor assembly to the vehicle. Refer to Compressor Assembly Automatic Level 

Control Air Replacement .  

ISOLATOR COMPRESSOR AUTOMATIC LEVEL CONTROL AIR REPLACEMENT 

Removal Procedure 

 

2004 Hummer H2 

2004 SUSPENSION Air Suspension - Hummer H2

  

1. Remove the compressor assembly from the vehicle and place on a bench. Refer to Compressor 

Assembly Automatic Level Control Air Replacement . 

Fig. 24: Identifying Isolators 
Courtesy of GENERAL MOTORS CORP. 

2. Remove the compressor. Refer to Compressor Automatic Level Control Replacement

CAUTION: Do NOT remove an air supply pipe in an attempt to depressurize the air 

suspension. Always follow the Air Suspension Depressurization 
Procedure in Air Suspension. Failure to follow this procedure may cause 
personal injury or damage to the vehicle.

 

2004 Hummer H2 

2004 SUSPENSION Air Suspension - Hummer H2