GM Service Manual Online
For 1990-2009 cars only

Steering Knuckle Replacement 4WD

Tools Required

    • J 24319-B Steering Linkage and Tie Rod Puller
    • J 43631 Ball Joint Remover

Removal Procedure


    Object Number: 731551  Size: SH
  1. Remove the tire and wheel center cap.
  2. Remove the drive axle nut.

  3. Object Number: 687432  Size: SH
  4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  5. Remove the tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  6. Remove the wheel hub and bearing. Refer to Front Wheel Hub, Bearing, and Seal Replacement .
  7. Remove the outer tie rod retaining nut.

  8. Object Number: 643351  Size: SH
  9. Disconnect the outer tie rod from the steering knuckle using J 24319-B .

  10. Object Number: 744318  Size: SH
  11. Remove the brake hose bracket retaining bolts.
  12. Remove the brake hose bracket from the steering knuckle.

  13. Object Number: 731542  Size: SH
  14. Remove the upper control arm to the steering knuckle pinch bolt and nut.
  15. Disconnect the upper control arm from the steering knuckle.

  16. Object Number: 742730  Size: SH
  17. Remove the lower ball joint retaining nut.

  18. Object Number: 752181  Size: SH
  19. Remove the steering knuckle from the lower control arm using J 43631 .
  20. Remove the steering knuckle from the vehicle.

Installation Procedure


    Object Number: 742730  Size: SH
  1. Install the steering knuckle to the lower control arm.
  2. 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.

  3. Install the lower ball joint retaining nut.
  4. Tighten
    Tighten the lower ball joint retaining nut to 110 N·m (81 lb ft).


    Object Number: 731542  Size: SH
  5. Connect the upper control arm to the steering knuckle.
  6. Install upper control arm pinch bolt and nut.
  7. Tighten
    Tighten the upper control arm pinch bolt to 40 N·m (30 lb ft).


    Object Number: 744318  Size: SH
  8. Install the brake hose bracket to the steering knuckle.
  9. Install the brake hose bracket retaining bolts.
  10. Tighten
    Tighten the brake hose bracket retaining bolts to 10 N·m (7 lb ft).


    Object Number: 687435  Size: SH
  11. Install the outer tie rod to the steering knuckle.
  12. Install the new outer tie rod retaining nut.
  13. Tighten
    Tighten the outer tie rod retaining nut to 45 N·m (33 lb ft).


    Object Number: 731551  Size: SH
  14. Install the wheel hub and bearing. Refer to Front Wheel Hub, Bearing, and Seal Replacement .
  15. Install the tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  16. Lower the vehicle.
  17. Install the drive axle nut.
  18. Tighten
    Tighten the drive axle nut to 140 N·m (103 lb ft).

  19. Adjust the front toe. Refer to Front Toe Adjustment in Wheel Alignment.

Steering Knuckle Replacement 2WD

Tools Required

    • J 24319-B Steering Linkage and Tie Rod Puller
    • J 43631 Ball Joint Remover

Removal Procedure


    Object Number: 687432  Size: SH
  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. Remove the wheel hub and bearing. Refer to Front Wheel Hub, Bearing, and Seal Replacement .
  4. Remove the outer tie rod retaining nut.

  5. Object Number: 643351  Size: SH
  6. Disconnect the outer tie rod from the steering knuckle using J 24319-B .

  7. Object Number: 744318  Size: SH
  8. Remove the brake hose bracket retaining bolts.
  9. Remove the brake hose bracket from the steering knuckle.

  10. Object Number: 731546  Size: SH
  11. Disconnect the ABS wheel speed sensor wiring harness bracket from the steering knuckle.

  12. Object Number: 731542  Size: SH
  13. Remove the upper control arm to the steering knuckle pinch bolt and nut.
  14. Disconnect the upper control arm from the steering knuckle.

  15. Object Number: 742730  Size: SH
  16. Remove the lower ball joint retaining nut.

  17. Object Number: 752181  Size: SH
  18. Remove the steering knuckle from the lower control arm using J 43631 .
  19. Remove the steering knuckle from the vehicle.

Installation Procedure


    Object Number: 742730  Size: SH
  1. Install the steering knuckle to the lower control arm.
  2. 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.

  3. Install the lower ball joint retaining nut.
  4. Tighten
    Tighten the lower ball joint retaining nut to 110 N·m (81 lb ft).


    Object Number: 731542  Size: SH
  5. Connect the upper control arm to the steering knuckle.
  6. Install upper control arm pinch bolt and nut.
  7. Tighten
    Tighten the upper control arm pinch bolt to 40 N·m (30 lb ft).


    Object Number: 731546  Size: SH
  8. Connect the ABS wheel speed sensor wiring harness bracket to the steering knuckle.

  9. Object Number: 744318  Size: SH
  10. Install the brake hose bracket to the steering knuckle.
  11. Install the brake hose bracket retaining bolts.
  12. Tighten
    Tighten the brake hose bracket retaining bolts to 10 N·m (7 lb ft).


    Object Number: 687432  Size: SH
  13. Install the outer tie rod to the steering knuckle.
  14. Install the new outer tie rod retaining nut.
  15. Tighten
    Tighten the outer tie rod retaining nut to 45 N·m (33 lb ft).

  16. Install the wheel hub and bearing. Refer to Front Wheel Hub, Bearing, and Seal Replacement .
  17. Install the tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  18. Lower the vehicle.
  19. Adjust the front toe. Refer to Front Toe Adjustment in Wheel Alignment.