Installation Procedure

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.

Install the compressor assembly to the vehicle.

IMPORTANT: Check the air supply lines for deep scores or cuts. If the air supply lines are damaged the lines must be replaced.

Install the air lines.

NOTE: Refer to Fastener Notice .

Fig 1: Rear Compressor Mounting Bolts

Courtesy of GENERAL MOTORS CORP.

Install the rear air spring compressor mounting nuts and bolts.
Tighten: Tighten the bolts to 50 N.m (37 lb ft).

Fig 2: Front Compressor Mounting Bolts

Courtesy of GENERAL MOTORS CORP.

Install the front air spring compressor mounting bolts.
Tighten: Tighten the bolts to 50 N.m (37 lb ft).

Fig 3: Air Spring Compressor Electrical Connector

Courtesy of GENERAL MOTORS CORP.

Connect the air spring compressor electrical connector.
Connect the ground strap.
Tighten: Tighten bolt to 6 N.m (53 lb in).
Connect the air inflator switch electrical connector.
Remove the support from the compressor.
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.

Lower the vehicle.
Pressurize the air springs. Refer to Air Suspension Pressurization .
Start the vehicle and run for approximately 2 minutes to ensure that the air spring leveling system is functioning properly.
Verify the D height. Refer to Trim Height Specifications .
Re-calibrate the trim height. Refer to Suspension Position Calibration .
Check for leaks. If a leak is found at the air supply line connections replace the air supply lines. Refer to Air Suspension Air Line Replacement .