Parking Brake Actuator: Service and Repair

Park Brake Actuator Replacement

Removal Procedure
Caution: Refer to Brake Dust Caution in Cautions and Notices.

1. Release the park brake.
2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
3. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
4. Relieve the tension from the park brake cables by loosening the nut at the adjuster.
5. Remove the park brake cable from the mounting bracket by depressing the locking tabs.
6. Remove the rear park brake cable from the park brake actuator lever.
7. Remove the rotor.
8. Remove the axle shaft. Refer to Rear Axle Shaft Replacement in Rear Drive Axle.
9. Remove the park brake shoe. Refer to Park Brake Shoe Replacement (Service and Repair) .




10. Remove the backing plate bolts.
11. Remove the park brake actuator lever housing from the backing plate.



Installation Procedure





1. Install the park brake actuator lever housing to the backing plate.
2. Perform the following procedure before installing the backing plate bolts.

1. Remove all traces of the original adhesive patch.
2. Clean the threads of the bolt with brake parts cleaner or the equivalent and allow to dry.
3. Apply Threadlocker GM P/N 12345493 (Canadian P/N 10953488) to the threads of the bolt.


Notice: Refer toFastener Notice in Cautions and Notices.

3. Install the backing plate bolts.

Tighten the backing plate bolts to 135 Nm (100 lb ft).

4. Install the park brake shoe. Refer to Park Brake Shoe Replacement (Service and Repair) .
5. Install the axle shaft. Refer to Rear Axle Shaft Replacement in Rear Drive Axle.
6. Adjust the park brake shoe. Refer to Park Brake Adjustment (Adjustments) .
7. Install the rotor.
8. Install the rear park brake cable to the park brake actuator lever.
9. Install the park brake cable to the mounting bracket until the locking tabs snap into place.
10. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
11. Remove the safety stands and lower the vehicle.
12. Adjust park brake cable. Refer to Park Brake Adjustment (Adjustments) .