A few of the features of a parking brake module of 2013 models are apply and release actuators, temperature sensor and computer logic circuits for operating parameters. Firstly, apply the front wheels parking brakes and also disconnect the parking brake cable adjuster and switch off the respective ignition button. Removing the left rear wheel requires that the left rear wheel lug nuts be loosened, the rear of the vehicle be raised and supported on jackstands. Next, remove the left rear inner fender liner, and push on the parking brake cable, thereafter, tightening its nut, and pulled off from the module. Disconnect the wiring harness retainer clips, if needed and disconnect the electrical connection of the module. Subsequently three mounting nuts are to be undone so as to pull out the parking brake portion and installation process goes in the reverse of that. As for parking brake cables, once again carry out the actions to block the front wheels as well as the electronic parking brake cable adjuster, turn the left rear wheel lug nuts counterclockwise to some extent, lift the vehicle and then pop off the left rear wheel. Lost the rear inner fender liners, parking brake module cable nut, cable retainer from caliper and brake hose brackets and then lost the parking brake module cable. Do the same for the other side brake caliper and take off the brake cable from the hooks below the car: The installation is done inversely. To calibrate the parking brake, get the drive wheels immobilized, insert the ignition switch to the 'On' position without starting the vehicle, apply pressure on the brake pedal when the transmission is in Park and then using the EPB switch, pull it up and then release momentarily. Depress and then release the EPB switch so as to achieve about 4- 5 cycle in order to set the parking brake. 2016 and later models do come with a few tips the first one is to be careful when or if the Electronic Parking Brake switch is engaged while removing the rear caliper as this leads to damaging of the caliper. There are several components that make up the EPB system; they are, the warning light, switch, electronic controller and two bidirectional motors that are fitted in the rear calipers. The rear caliper piston can be retracted by loosening the rear wheel lug nuts, elevating the car and the wheels being taken off. Depress the parking brake and pull the parking brake actuator out; rotate the caliper piston in the anti-clockwise direction if you want to do some repairs. Turn the caliper piston back into its original position with the actuator shaft in line with the piston and replace the actuator retaining bolts. After lowering the vehicle body and reconnecting the battery, operate the EPB switch at least 4 times, in order to adjust the distance between the brake pad and brake drum. If there is a code that shows a false problem with the parking brake after the repairs have been done, it is advisable to get it scanned, confirmed and reset. To remove or install the parking brake actuator, unplug the cable from the negative terminal of the battery, unscrew two bolts that locate the parking brake actuator to the brake caliper and while doing this, the O-ring is also removed, and the actuator is pulled from the caliper. It is necessary to remove the O-ring and reinstall a new one to minimize the effects of dirt and moisture; if it is necessary to replace the actuator, first, loosen the electrical connector and then fasten the actuator in the reversed manner.
Posted by GMPartsGiant Specialist 
