GM 19178785
Backing Plate, Rear

After freeing the park brake you need to lift the vehicle and place supports under it to proceed with the replacement. Take off the tire and wheel unit before easing the park brake cable tension by pulling down on the cable near the equalizer bar and then detaching it from the equalizer. Take off the park brake cable from its mounting bracket using the locking tabs and remove the rear brake cable end from the park brake actuator lever . First unfasten the rotor from the housing then lower the Axle Shaft before taking out the park brake shoe. Using a socket and wrench remove the backing plate bolts until you can take the backing plate away from the axle housing flange. Put the backing plate on the axle housing flange first then use the backing plate nuts to fasten it at 135 nm (100 ft. Lbs.). Install the park brake shoe first and then the Axle Shaft before adjusting the park brake shoe. Install the rotor while connecting the rear park brake cable end back to the park brake actuator lever and fasten the park brake cable to its mounting bracket through the locking tabs. Complete the installation by connecting the equalizer bar to the park brake cable then put back the tire and wheel unit. Take out the safety stands and lower the vehicle while setting the park brake properly.

Replacement of the rear Brake Backing Plate requires initial park brake cable removal according to the processes mentioned in parking brake front cable replacement for the left cable and parking brake rear cable replacement - left side (w/Rear Disc) and parking brake rear cable replacement - left side (w/Rear Drum) for the right cable. The brake procedure begins by taking out the Wheel Cylinder followed by removing the rear Axle Shaft and concluding by unfastening the backing plate bolts to extract the backing plate. The backing plate gets installed onto the rear axle housing by following service precaution fastener notice instructions before installing backing plate bolts which must be tightened to 135 nm (100 ft. Lbs.). Reinstall the rear Axle Shaft followed by the Wheel Cylinder and the park brake cable. All installations must follow operations documented for the left and right cables.

Reinstall the hub and bearing assembly.

The caliper and mounting bracket.

Reinstall the rear axle shaft and the wheel cylinder, and finally, reconnect the park brake cable, following the specific procedures for the left or right cable as required.

Attach the backing plate to the axle housing flange and ensure to remove all traces of the original adhesive patch.

Reinstall the hub and bearing assembly.

Remove the hub and bearing assembly.

Remove the rotor, followed by the axle shaft, and then take out the park brake shoe.