GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 105016  Size: SH
  1. Remove the trunk trim back to gain access to the upper shock.
  2. Remove upper shock dust cover.
  3. Remove shock absorber upper retaining nuts and reinforcement from the shock absorber.
  4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

  5. Object Number: 472979  Size: SH
  6. Disconnect the road sensing suspension or automatic level control air tube from the shock.
  7. Disconnect the electrical connector from the shock absorber.
  8. Remove the shock absorber wiring from the lower control arm.
  9. Remove the shock absorber mounting bolts from the lower control arm.

  10. Object Number: 337438  Size: SH
  11. Remove the shock absorber from the vehicle

Installation Procedure


    Object Number: 337438  Size: SH
  1. Install the shock absorber to the vehicle.

  2. Object Number: 472979  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  3. Install the shock absorber lower retaining bolts.
  4. Tighten
    Tighten the shock absorber lower retaining bolts to 25 N·m (18 lb ft).

  5. Route the wiring harness along the inboard side of the lower control arm.
  6. Connect the shock absorber electrical connector.
  7. Connect the Electronic Air Control air tube to shock.
  8. Important: Before lowering the vehicle onto its wheels (or before driving the vehicle, if it was not on a lift) turn the ignition on and wait approximately 45 seconds. This will permit the ALC system to execute the ARC, ensuring that the air adjustable shock absorbers are filled with residual pressure.

  9. Lower the vehicle.

  10. Object Number: 105016  Size: SH
  11. Install the upper shock absorber into the body.
  12. Install the upper shock absorber reinforcement and retaining nuts.
  13. Tighten
    Tighten the shock absorber upper retaining nuts to 25 N·m (18 lb ft).

  14. Install the shock absorber cover.
  15. Install the trunk trim.