GM Service Manual Online
For 1990-2009 cars only

Knuckle Replacement Without B9Q/V4U

Removal Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the tire and wheel assembly. Refer to Wheel Removal .
  3. Remove the caliper. Suspend the caliper. Refer to Brake Caliper Replacement in Disc Brakes.
  4. Remove the rotor. Refer to Brake Rotor Replacement in Disc Brakes.
  5. Remove the hub and bearing assembly. Refer to Rear Wheel Bearing and Hub Replacement .
  6. Caution: Jackstand must be of adequate strength to support vehicle weight. Jackstand must be securely positioned or personal injury may result.

    Caution: Place Jackstand under front of vehicle to prevent vehicle from falling from hoist.

  7. Support the outboard end of the lower control arm with a screw jack in order to relieve the spring load.

  8. Object Number: 161652  Size: SH
  9. Remove the lower shock absorber bolt.

  10. Object Number: 161647  Size: SH
  11. Remove the stabilizer link from the control arm.

  12. Object Number: 161657  Size: SH
  13. Remove the rear toe link outer bolt and discard. The bolt is not reusable.

  14. Object Number: 161656  Size: SH
  15. Remove the lower control arm outer nut and bolt.
  16. Remove the upper control arm outer nut and bolt.
  17. Disconnect the wheel speed sensor cable bracket from the knuckle.
  18. Remove the knuckle.

Installation Procedure


    Object Number: 161656  Size: SH
  1. Connect the wheel speed sensor cable bracket to the knuckle.
  2. Position the knuckle in the upper control arm. Install the bolt and the nut.
  3. Position the knuckle in the lower control arm. Install the bolt and the nut.

  4. Object Number: 161657  Size: SH
  5. Install the new rear toe link outer bolt. Do not tighten the bolt at this time. The toe link must be tightened in design position in order to reduce windup in the bushings.

  6. Object Number: 161647  Size: SH
  7. Install the stabilizer link to the control arm.

  8. Object Number: 161652  Size: SH
  9. Install the lower shock absorber bolt.
  10. 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.

  11. Install the hub and bearing. Refer to Rear Wheel Bearing and Hub Replacement .
  12. Tighten

        • Tighten the upper control arm outer nut to 57 N·m (42 lb ft).
            
        • Tighten the lower control arm outer nut to 102 N·m (75 lb ft).
        • Tighten the toe link outer bolt to 75 N·m (55 lb ft).
        • Tighten the lower shock nut to 102 N·m (75 lb ft).
        • Tighten the lower stabilizer link bolt to 60 N·m (44 lb ft).
        • Tighten the hub mounting bolts to 70 N·m (52 lb ft).
  13. Install the rotor. Refer to Brake Rotor Replacement in Disc Brakes.
  14. Install the caliper and new caliper bracket mounting bolts. Refer to Brake Caliper Replacement in Disc Brakes.
  15. Install the tire and wheel assembly. Refer to Wheel Installation in Tires and Wheels.
  16. Lower the vehicle.

Knuckle Replacement With B9Q/V4U

Removal Procedure


    Object Number: 254477  Size: SH
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the brake drum. Refer to Brake Drum Replacement in Drum Brakes.
  3. Remove the brake shoes and brake cable.
  4. Remove the brake line and wheel sensor. Refer to Brake Lining Replacement in Drum Brakes.
  5. Support the lower control arm with a suitable jack stand.

  6. Object Number: 263893  Size: SH
  7. Remove the lower ball stud nut and separate from the knuckle.
  8. Remove the upper knuckle nut and bolt.

  9. Object Number: 254479  Size: SH
  10. Remove the four bolts from the bearing retainer.

  11. Object Number: 254475  Size: SH
  12. Remove the nut (1) form the backside of the knuckle.
  13. Using a press, remove the hub from the knuckle.
  14. Remove the hub from the knuckle.
  15. Remove the brake backing plate from the knuckle.
  16. If required, press the bearing from the knuckle.

Installation Procedure


    Object Number: 254475  Size: SH
  1. Press the bearing into the knuckle if required.
  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 bearing retainer and four bolts to the knuckle.
  4. Tighten
    Tighten the backing plate bolts to 50 N·m (37 lb ft).

  5. Press the hub into the bearing.
  6. Install the speed sensor reluctor and nut (1).
  7. Tighten
    Tighten the nut to 200 N·m (145 lb ft).


    Object Number: 263893  Size: SH
  8. Install the upper knuckle bolt and nut.
  9. Tighten
    Tighten the nut to 108 N·m (80 lb ft).

  10. Install the lower ball joint to the knuckle.
  11. Install the brake line and wheel speed sensor.
  12. Install the brake shoes and park cable.
  13. Install the brake drum. Refer to Brake Drum Replacement in Drum Brakes.
  14. Bleed the brakes. Refer to Hydraulic Brake System Bleeding in Hydraulic Brakes.
  15. Install the wheel and tire.
  16. Tighten
    Tighten the wheel nuts to 190 N·m (140 lb ft).

  17. Lower the vehicle.