GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Block the wheels of the axle.

  2. Object Number: 200667  Size: SH
  3. Remove the locknuts (2, 3) and the washer that connects the height control valve link (5) to the valve (1).
  4. Remove the height control valve link (5) from the control valve (1).
  5. Drain the air pressure from the air springs.
  6. Raise the frame of the vehicle in order to remove the load from the suspension.
  7. Support the frame using jack stands.

  8. Object Number: 200663  Size: SH
  9. Remove the locknut (3) and the washer that connect the air spring (1) to the cross channel (2) and to both of the main support beams.
  10. Raise the cross channel using jacks, if required.

Installation Procedure


    Object Number: 200663  Size: SH
  1. Connect the cross channel (2) to both of the air springs (1).
  2. Lower the frame.
  3. Pilot the bolt holes onto the main support beam.
  4. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 200660  Size: SH
  5. Install the washers and the locknuts (4) that connect the cross channel (1) to the main support beam (3).
  6. Tighten
    Tighten the locknuts in 37 N·m (50 lb ft) increments to 330 N·m (243 lb ft).

  7. Refill the system with air.
  8. Unblock the wheels.