GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Release the park brake.
  2. Apply the brake pedal at least 10 times.
  3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  4. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .

  5. Object Number: 1245719  Size: SH
  6. Remove the lock ring and the caulking nut from the spindle.
  7. Caution: Refer to Brake Dust Caution in the Preface section.


    Object Number: 1242004  Size: SH

    Important: Pull the drum straight off the spindle. The 2 inner wheel bearing races are not secured inside the drum by a ring.

  8. Remove the drum from the spindle.
  9. If necessary, remove the wheel bearing. Refer to Rear Wheel Bearing and Hub Replacement .

Inspection Procedure

  1. Clean the brake components.
  2. Inspect the brake drum and the inner races of the wheel bearings inside the drum. Replace the drum, if necessary. Refer to Brake Drum Surface and Wear Inspection .

  3. Object Number: 1245725  Size: SH
  4. Apply lubricant to the adjuster assembly.
  5. Inspect the threads of the adjuster assembly for smooth rotation.

Installation Procedure

  1. If you removed the wheel bearing, install the wheel bearing. Refer to Rear Wheel Bearing and Hub Replacement .
  2. Adjust the rear brakes. Refer to Drum Brake Adjustment .

  3. Object Number: 1242004  Size: SH

    Important: Slide the brake drum straight on the spindle. Use care in order to properly position the wheel bearings and the drum on the spindle.

  4. Install the brake drum to the spindle.
  5. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1245719  Size: SH
  6. Install the lock ring and the caulking nut to the spindle.
  7. Tighten
    Tighten the nut to 200 N·m (148 lb ft).

  8. Stake the lock ring to the nut.
  9. Install the rear tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  10. Lower the vehicle.
  11. Important: If the clicking sound of the adjuster is not audible from either brake drum, the clearance between the brake shoes and the brake drum is adjusted.

  12. Apply the brake pedal at least 10 times.
  13. Verify the clicking sound of the adjuster assembly is not audible from either brake drum.

  14. Adjust the park brake. Refer to Park Brake Adjustment .