GM Service Manual Online
For 1990-2009 cars only

Steering Knuckle Replacement Torsion Bar Suspension

    • J 43631 Ball Joint Remover
    • J 45851 Ball Joint Separator Protector Adapters
    • J-42188-B Ball Joint Separator

Removal Procedure

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

  3. Object Number: 160827  Size: SH
  4. Support the control arm with a safety stand.
  5. Disconnect the Electronic Suspension Control (ESC) link rod from the sensor, if equipped. Refer to Electronic Suspension Front Position Sensor Link Assembly Replacement in Electronic Suspension Control.
  6. Unload the torsion bars. Refer to Torsion Bar Replacement .
  7. Remove the wheel hub and bearing assembly. Refer to Front Wheel Hub, Bearing, and Seal Replacement .
  8. Remove the outer tie rod to the steering knuckle. Refer to Tie Rod Replacement in Steering Linkage (Non- Rack and Pinion).

  9. Object Number: 367084  Size: SH
  10. Remove the brake hose bracket retaining bolt from the steering knuckle.

  11. Object Number: 853946  Size: SH
  12. Remove the upper control arm retaining nut and separate the upper ball joint from the steering knuckle using the J-42188-B .

  13. Object Number: 853943  Size: SH
  14. Remove the lower ball joint retaining nut. Separate the lower ball joint from the steering knuckle using the J 43631 and J 45851 .

  15. Object Number: 371423  Size: SH
  16. Remove the steering knuckle.

Installation Procedure

  1. Clean all grease and contaminants from the tapered section and the threads of the upper ball joint, the lower ball joint, and the tie rod end.
  2. Clean and inspect the taper holes and the mounting surfaces of the steering knuckle. If any of the tapered holes are elongated, out of round, or damaged, replace the steering knuckle.

  3. Object Number: 371423  Size: SH
  4. Install the steering knuckle.
  5. Notice: Refer to Fastener Notice in the Preface section.

  6. Connect the lower ball joint to the steering knuckle and install the retaining nut.
  7. Tighten
    Tighten the lower control arm retaining nut to 100 N·m (74 lb ft).

  8. Connect the upper ball joint to the steering knuckle and install the retaining nut.
  9. Tighten
    Tighten the upper control arm retaining nut to 50 N·m (37 lb ft).


    Object Number: 367084  Size: SH
  10. Install the brake hose and the bracket retaining bolt to the steering knuckle
  11. Tighten
    Tighten the bolt to 9 N·m (80 lb in).

  12. Install the outer tie rod to the steering knuckle. Refer to Tie Rod Replacement in Steering Linkage (Non- Rack and Pinion).
  13. Install the wheel hub and bearing assembly. Refer to Front Wheel Hub, Bearing, and Seal Replacement .
  14. Connect the ESC link rod to the sensor, if equipped. Refer to Electronic Suspension Front Position Sensor Link Assembly Replacement in Electronic Suspension Control.
  15. Install the tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  16. Load the torsion bars. Refer to Torsion Bar Replacement .
  17. Remove the safety stands.
  18. Lower the vehicle .
  19. Check the wheel alignment. Refer to Wheel Alignment Measurement in Wheel Alignment.