GM Service Manual Online
For 1990-2009 cars only

Shock Absorber Replacement Rear Wheel Drive

Removal Procedure

  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the wheel. Refer to Wheel Removal in Tires and Wheels.

  3. Object Number: 1820  Size: SH
  4. Remove the nut, the retainer, and the insulator. Hold the shock absorber upper stem in order to keep the stem from turning. A hex is provided on the end of the stem for this purpose.
  5. Remove the screws. The nuts will remain attached to the lower control arm.
  6. Pull the shock absorber out through the hole in the lower control arm.

Installation Procedure


    Object Number: 1821  Size: SH
  1. Install the shock absorber, fully extended, up through the hole in the lower control arm.
  2. • The lower retainer and the insulator must be attached to the shock absorber upper stem before positioning the shock absorber.
    • The shock absorber upper stem will pass through the mounting hole in the upper control arm frame bracket.
  3. Install the upper insulator, the retainer, and the nut over the shock absorber upper stem.
  4. 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.

  5. Install the screws through the holes in the lower control arm.
  6. Tighten

    1. Make sure the nuts are aligned properly.
    2. Tighten the nut to 20 N·m (15 lb ft), while holding the upper stem of the shock absorber.
    3. Tighten the screws to 25 N·m (18 lb ft).
  7. Install the wheel. Refer to Wheel Installation in Tires and Wheels.
  8. Lower the vehicle.

Shock Absorber Replacement Full-Time Four-Wheel Drive

Removal Procedure

  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the tire and the wheel. Refer to Wheel Removal in Tires and Wheels.
  3. Remove the inner wheelhouse splash shield.

  4. Object Number: 165007  Size: SH
  5. Remove the lower nut, the washer, and the bolt.
  6. Remove the upper nut, the washer, and the bolt.
  7. Collapse the shock absorber.
  8. Remove the shock absorber.

Installation Procedure


    Object Number: 165007  Size: SH
  1. Install the shock absorber to the bracket.
  2. Important: Position the bolts in the same direction that they removed or suspension clearance may be affected.

  3. Install the bolts.
  4. 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.

  5. Install the new nuts and the washers to the bolts.
  6. Tighten
    Tighten the nuts to 62 N·m (46 lb ft).

  7. Install the inner wheelhouse splash shield.
  8. Install the tire and the wheel. Refer to Wheel Installation in Tires and Wheels.
  9. Lower the vehicle.