GM Service Manual Online
For 1990-2009 cars only

Parking Brake Adjustment Drum Brakes

Inspection Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

  2. Object Number: 428451  Size: SH
  3. Pull the park brake lever with approximately 20 kg (44.1 lb) of force.
  4. Count the number of clicks or ratchet notches.
  5. Specification

        • The minimum number of clicks is 5.
        • The maximum number of clicks is 7.
  6. Attempt to rotate the rear wheels. Verify the rear wheels do not rotate.
  7. Release the park brake.
  8. Attempt to rotate the rear wheels. Verify the rear wheels rotate freely.
  9. Turn the ignition switch to the ON position. Verify the red BRAKE warning indicator is OFF.
  10. If the park brake lever travel is correct, lower the vehicle.
  11. If the park brake lever travel is not correct, complete the Adjustment Procedure.

Adjustment Procedure

  1. Remove the drum brake adjuster hole cover.

  2. Object Number: 239084  Size: SH
  3. Insert a screwdriver through the hole in the backing plate. Hold the automatic adjusting lever away from the adjusting bolt.
  4. Use another screwdriver in order to turn the adjusting bolt. Turn the adjusting bolt down in order to expand the brake shoes until the drum locks.
  5. Turn the adjusting bolt up 8 notches in order to adjust the shoes to the proper distance away from the drum.
  6. Install the adjuster hole cover.
  7. Remove the rear center console. Refer to Rear Floor Console Replacement in Instrument Panel Gages and Console.

  8. Object Number: 815064  Size: SH
  9. Loosen the lock nut (1).
  10. Turn the adjusting nut (2) in order to adjust the park brake lever travel. Refer to the Inspection Procedure above.
  11. Tighten the lock nut.
  12. Tighten
    Tighten the nut to 5.0 N·m (44.25 lb in)

  13. Install the rear center console. Refer to Rear Floor Console Replacement in Instrument Panel Gages and Console.

Parking Brake Adjustment Disc Brakes

Inspection Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

  2. Object Number: 428451  Size: SH
  3. Pull the park brake lever with approximately 20 kg (44.1 lb) of force.
  4. Count the number of clicks or ratchet notches.
  5. Specification

        • The minimum number of clicks is 5.
        • The maximum number of clicks is 7.
  6. Attempt to rotate the rear wheels. Verify the rear wheels do not rotate.
  7. Release the park brake.
  8. Attempt to rotate the rear wheels. Verify the rear wheels rotate freely.
  9. Turn the ignition switch to the ON position. Verify the red BRAKE warning indicator is OFF.
  10. If the park brake lever travel is correct, lower the vehicle.
  11. If the park brake lever travel is not correct, complete the Adjustment Procedure.

Adjustment Procedure

  1. Remove the rear tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  2. Remove the park brake adjuster hole cover from the rear disc.
  3. Insert a screwdriver through the hole in the disc.
  4. Use the screwdriver in order to turn the adjusting bolt. Turn the adjusting bolt down in order to expand the brake shoes until the disc locks.
  5. Turn the adjusting bolt up 8 notches in order to adjust the shoes to the proper distance away from the drum portion of the rear disc.
  6. Install the adjuster hole cover.
  7. Install the rear tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  8. Remove the rear center console. Refer to Rear Floor Console Replacement in Instrument Panel Gages and Console.

  9. Object Number: 815064  Size: SH
  10. Loosen the lock nut (1).
  11. Turn the adjusting nut (2) in order to adjust the park brake lever travel. Refer to the Inspection Procedure above.
  12. Tighten the lock nut.
  13. Tighten
    Tighten the nut to 5.0 N·m (44.25 lb in)

  14. Install the rear center console. Refer to Rear Floor Console Replacement in Instrument Panel Gages and Console.