Hummer H2. Manual - part 2227

Fig. 41: Air Spring Support 
Courtesy of GENERAL MOTORS CORP. 

1. Install the air spring support to the axle. 

Tighten: Tighten the bolt to 22 N.m (16 lb ft).

NOTE:

Refer to Fastener Notice in Cautions and Notices.

 

2004 Hummer H2 

2004 SUSPENSION Air Suspension - Hummer H2

  

Fig. 42: Air Supply Line & Air Spring 
Courtesy of GENERAL MOTORS CORP. 

2. Install the air supply line to the air spring. Verify that the air supply line is fully seated. Refer to Air 

Suspension Air Line Replacement . 

 

2004 Hummer H2 

2004 SUSPENSION Air Suspension - Hummer H2

  

Fig. 43: Removing & Installing Air Spring 
Courtesy of GENERAL MOTORS CORP. 

3. Install the air spring to the vehicle.  

4. Secure the air spring to the frame by aligning the mounting tabs with the keyhole slots in the upper spring 

seat.  

5. Apply upward pressure to the air spring and rotate clockwise until the anti-rotation peg snaps into place. 

 

2004 Hummer H2 

2004 SUSPENSION Air Suspension - Hummer H2

  

6. Pressurize the air springs. Refer to Air Suspension Pressurization Procedure .  

7. Lower the vehicle completely.  

8. Start the vehicle and run for approximately 2 minutes to verify that the air suspension system is 

functioning properly.  

9. Verify the D-height. Refer to Trim Height Specifications in Suspension General Diagnosis.  

AIR SUSPENSION AIR LINE REPLACEMENT 

Removal Procedure 

1. Depressurize the air suspension system. Refer to Air Suspension Depressurization Procedure .  

2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information. 

IMPORTANT: If the rear axle was allowed to hang unsupported, lower the vehicle far 

enough to allow the air spring to be manually engaged to the support on 
the axle tube with minimal distortion of the air spring bladder. Ensure that 
the air spring is fully engaged to the axle support.

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