GM Service Manual Online
For 1990-2009 cars only

Adjustment Procedure


    Object Number: 1255733  Size: SH

    Danger: To avoid any vehicle damage, serious personal injury or death when major components are removed from the vehicle and the vehicle is supported by a hoist, support the vehicle with jack stands at the opposite end from which the components are being removed and strap the vehicle to the hoist.

  1. Release the parking brake.
  2. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle.
  3. Remove the rear wheels. Refer to Tire and Wheel Removal and Installation.
  4. Remove the caliper and the rotor assemblies. Refer to Rear Brake Caliper Replacement , and Rear Brake Rotor Replacement.
  5. Disconnect the parking brake cable from the backplate groove.
  6. Inspect and replace any parts of doubtful strength or quality because of discoloration from heat or stress.
  7. Using a vernier caliper, adjust the shoe assembly to 167.4-167.6 mm (6.59-6.60 in) by turning the adjuster nut clockwise to increase the diameter.
  8. Install the caliper and the rotor assemblies. Refer to Rear Brake Caliper Replacement , and Rear Brake Rotor Replacement.
  9. Install the rear wheels. Refer to Tire and Wheel Removal and Installation.
  10. Install the parking brake cable to the backplate groove.
  11. In the vehicle cabin, pull on the parking brake handle and stop after hearing 2 clicks.
  12. Turn the rear wheel by hand until the wheel begins to drag.
  13. Release the parking brake.
  14. Turn the rear wheel by hand to check drag and to readjust the cable, if necessary.
  15. Repeat the process for the other rear wheel and lower the vehicle.