To replace the rear brake rotor (without NYS), start the process with the removal of the park brake, as well as raising the vehicle securely. Remove the tire and wheel assembly and designate the rotor's position to the axle flange. Compress brake caliper pistons with a c-clamp to remove caliper and bracket assembly without disconnecting hose, supporting with heavy mechanic's wire. Remove the rotor retaining push nuts where available and if required hit the hub or rotor with a deadblow hammer to loosen it. If it is hard to remove the rotor, attach the rotor removal tool (J-46277) onto the slide hammer with adapter (J 2619-01) and shove it between the friction surfaces of the rotor to help in extraction. Examine the park brake components and replace any damaged parts. To install, clean the hub flange with the wheel hub resurfacing kit (J 42450-A) and the inside diameter of the brake rotor with the rotor resurfacing kit (J 41013). Make sure that all mating surfaces are free of debris and align the rotor and install it by turning it gently. If the rotor was a part of a brake system repair measure the assembled lateral runout (LRO) and rectify it if it is required. Remove the caliper bracket and caliper assembly, clean the bolt threads and apply threadlocker gm p/n 12345493 (Canadian P/N 10953488), and install them to the specified torque. Finally, reinstall the tire and wheel assembly, and lower the vehicle, and set the brake caliper pistons correctly on the brake pedal by pressing and releasing it a few times before filling the master cylinder reservoir with clean brake fluid.