GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the tire and the wheel. Refer to Tire and Wheel Removal and Installation .
  3. Support the rear carrier using a utility stand.
  4. Remove the rear suspension knuckle. Refer to Knuckle Replacement .
  5. Disconnect the wheel speed sensor harness from the lower control arm and from the rear cross member.
  6. Remove the rivets that attach the park brake cable to the rear crossmember.
  7. Remove the automatic level control (ALC) height sensor and link from the crossmember bar and lower control arm. Refer to Automatic Level Control Sensor Replacement .
  8. Secure the ALC wiring harness out of the way.
  9. Using a utility jack, support the rear crossmember.
  10. Remove the rear crossmember mounting bolts.

  11. Object Number: 771995  Size: SH
  12. Lower the rear crossmember.
  13. Remove the rear stabilizer shaft. Refer to Stabilizer Shaft Replacement .
  14. Remove the rear axle upper control arms from the rear crossmember. Refer to Rear Axle Upper Control Arm Replacement .
  15. Remove the rear axle lower control arms from the rear crossmember. Refer to Rear Axle Lower Control Arm Replacement .
  16. Remove the tie rods from the rear crossmember. Refer to Tie Rod Replacement .

Installation Procedure

  1. Install the tie rods to the crossmember. Refer to Tie Rod Replacement .
  2. Install the rear axle lower control arms onto the rear crossmember. Refer to Rear Axle Lower Control Arm Replacement .
  3. Install the rear axle upper control arms onto the rear crossmember. Refer to Rear Axle Upper Control Arm Replacement .
  4. Install the rear stabilizer shaft onto the rear crossmember. Refer to Stabilizer Shaft Replacement .

  5. Object Number: 1594412  Size: SH
  6. Raise the rear crossmember.
  7. Align the rear crossmember using guide pins through the rail holes (1).
  8. Install the rear crossmember mounting bolts.
  9. Notice: Refer to Fastener Notice in the Preface section.

  10. Tighten the mounting bolts.
  11. Tighten
    Tighten the rear crossmember mounting bolts to 130 N·m (96 lb ft) .

  12. Install the ALC height sensor onto the crossmember and lower control arm. Refer to Automatic Level Control Sensor Replacement .
  13. Attach the parking brake cable onto the rear crossmember. Refer to Parking Brake Rear Cable Replacement - Left Side and Parking Brake Rear Cable Replacement - Right Side .
  14. Connect the wheel speed sensor harness onto the rear crossmember and the lower control arm.
  15. Install the rear suspension knuckle. Refer to Knuckle Replacement .
  16. Install the tire and the wheel. Refer to Tire and Wheel Removal and Installation .
  17. Lower the vehicle.
  18. Inspect the rear wheel alignment and adjust as necessary. Refer to Wheel Alignment Measurement .