GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 24319-B Universal Steering Linkage Puller

Removal Procedure


    Object Number: 472979  Size: SH
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the tires and wheels. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  3. Support the lower control arm with a suitable jack.
  4. Remove the automatic level control air tube from the shock absorber.
  5. Remove the shock absorber lower retaining bolts.

  6. Object Number: 643351  Size: SH
  7. Remove the adjustment link retaining nut.
  8. Using J 24319-B separate the adjustment link from the lower control arm.

  9. Object Number: 105025  Size: SH
  10. Slowly lower the lower control arm until it bottoms on the rear support.
  11. Using a pry bar, pry under the coil spring lower insulator and remove the coil spring with the insulator.
  12. Remove the upper insulator by pulling downward.

Installation Procedure


    Object Number: 105027  Size: SH
  1. Install the upper insulator to the body.

  2. Object Number: 472986  Size: SH
  3. Install the lower insulator to the lower control arm.
  4. Install the coil spring ensuring the insulator is seated in the lower control arm.

  5. 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.

  6. Raise the lower control arm and install the shock absorber retaining bolts.
  7. Tighten
    Tighten the shock absorber retaining bolts to 25 N·m (18 lb ft).


    Object Number: 472989  Size: SH
  8. Install the adjustment link to the lower control arm.
  9. Install the adjustment link retaining nut.
  10. Tighten
    Tighten the adjustment link retaining nut to 75 N·m (55 lb ft).

    Important: Before lowering the vehicle onto it's 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.

  11. Connect the automatic level control air tube to the shock.
  12. Install the tires and wheels. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  13. Lower the vehicle.