GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Install the pin into the park brake lever. Refer to Parking Brake Cable Adjuster Disabling in Parking Brake.
  2. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the tire and the wheel assembly from the vehicle. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  4. Mark the relationship of the drum to the hub.
  5. Remove the brake drum retaining clips (if applicable).

  6. Object Number: 159798  Size: SH
  7. Remove the brake drum.

  8. Object Number: 221  Size: SH
  9. If the brake drum does not come off easily, perform the following steps:
  10. 7.1. Remove the access hole plug from the backing plate.
    7.2. Insert a flat-bladed tool through the backing plate access hole (1) in order to disengage the self adjuster.
    7.3. Insert another flat-bladed tool through the same backing plate access hole in order to loosen the adjuster screw.
    7.4. Install the access hole plug in order to prevent dirt or contamination from entering the drum brake.
    7.5. Apply a small amount of penetrating oil around the brake drum center hole.
    7.6. Remove the brake drum.

Installation Procedure


    Object Number: 159798  Size: SH
  1. Locate the relationship mark and install the brake drum to the axle.
  2. Install the rear brake drum retainers if present.
  3. Remove the pin from the park brake lever. Refer to Parking Brake Cable Adjuster Enabling in Parking Brake.
  4. Install the tire and the wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  5. Adjust the rear brakes. Refer to Drum Brake Adjustment .
  6. Lower the vehicle.
  7. With the engine OFF, gradually apply the brake pedal approximately 2/3 of its travel distance.
  8. Slowly release the brake pedal.
  9. Wait 15 seconds, then repeat steps 7-8 until a firm brake pedal is obtained. This will properly seat the wheel cylinders and brake shoes.