GM Service Manual Online
For 1990-2009 cars only

Rear Axle Upper Control Arm Replacement IRS

Removal Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the rear wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  3. Remove the rear stabilizer link.
  4. Remove the brake hose bracket-to-knuckle bolts.
  5. Remove the brake hose bracket in order to disconnect the brake hose from the parking brake lever.

  6. Object Number: 629521  Size: SH
  7. Use a utility stand in order to support the lower control arm.
  8. Disconnect the height sensor link from the lower control arm as necessary.

  9. Object Number: 629210  Size: SH
  10. Remove the upper control arm to knuckle nut and bolt.

  11. Object Number: 629234  Size: SH
  12. Remove the upper control arm to crossmember bolts and nuts.
  13. Remove the upper control arm.

Installation Procedure

  1. Install the upper control arm.
  2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 629234  Size: SH
  3. Install the bolts and the nuts which secure the upper control arm to the crossmember.
  4. Tighten
    Tighten the nuts to 75 N·m (55 lb ft).


    Object Number: 629210  Size: SH
  5. Install the upper control arm to the knuckle.
  6. Tighten
    Tighten the nut which secures the upper control arm to 100 N·m (74 lb ft).

  7. Connect the height sensor link to the lower control arm as necessary.
  8. Remove the utility stand.
  9. Install the brake hose bracket.
  10. Install the brake hose bracket belts. Refer to Rear Brake Hose Replacement in Hydraulic Brakes.
  11. Install the rear stabilizer link.
  12. Tighten
    Tighten the stabilizer link ball nut to 40 N·m (29 lb ft).

  13. Install the rear wheel.
  14. Lower the vehicle.