GM Service Manual Online
For 1990-2009 cars only

Object Number: 227991  Size: SH

At the rear struts and at the pressure limiter valve, the air tube connectors are held on with spring clips which snap into the grooves of the struts air fittings or pressure limiter valve. Air tube connectors are sealed using two O-rings.

Important: Before disconnecting any air tube, clean the connector and the surrounding area to prevent dirt and other foreign material from entering the ALC system.

To disconnect an air tube from a strut or from the pressure limiter valve, rotate the spring clip 90 degrees out of the slots, and pull the connector off.

Important: Ensure that the air tube is routed correctly and all fasteners are used.

To connect an air tube to a strut or to the pressure limiter valve, use the following instructions:

  1. Lubricate the two O-rings using silicone lubricant.
  2. Rotate the spring clip 90 degrees into the slots.
  3. Push the air tube connector on the strut fitting or pressure limiter valve until the spring clip snaps into the groove.

Removal Procedure

  1. Remove the air tube from air dryer.

  2. Object Number: 280205  Size: SH
  3. Remove the air tube and the two clips from the air compressor bracket.
  4. Remove both rear wheels. Refer to Wheel Removal .

  5. Object Number: 280201  Size: MH
  6. Remove the air tube from the left rear shock absorbers.

  7. Object Number: 280197  Size: MH
  8. Remove the air tube from the right rear shock absorbers.
  9. Remove the air tube from three clips and the vehicle.

Installation Procedure

  1. Connect the air tube to the air dryer.

  2. Object Number: 280205  Size: SH
  3. Connect the air tube and two clips to the air compressor bracket.
  4. Connect the air tube and the three clips on the vehicle suspension support assembly.
  5. Connect the air tube to left rear shock absorber.
  6. Connect the air tube to the right rear shock absorber.
  7. Install both rear wheels. Refer to Wheel Removal .
  8. Important: Before driving the vehicle, turn the ignition on and wait approximately 45 seconds. This will permit the ELC system to execute the ARC, ensuring that the air adjustable struts are filled with residual pressure.

  9. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.