GM 25997047
Caliper Bracket, Rear

Start your Brake Caliper Bracket replacement by draining 2/3 of the brake fluid from the master cylinder. After lifting the vehicle and to support it you should take out the tire and wheel assembly. You need to take off the caliper first before removing the caliper bracket with Steering Knuckle assembly to check for damage on the caliper bracket. Install the parts by placing the caliper mounting bracket first on the Steering Knuckle assembly then fitting the caliper on top. Put back the wheel and tire unit then take away the support stands before bringing the car down. Press the brake pedal steadily yet strongly to let the brake pads fix into position.

The Brake Caliper Bracket on the back brake needs heavy wire support to stay connected to the hydraulic hose during replacement. Detach the caliper from its mounting bracket but leave the hydraulic brake hose connected before dissembling the brake pads and anti-rattle clips from the Brake Caliper Bracket. Unthread the two bolts securing the Brake Caliper Bracket and take out the bracket. During this step clean both bracket ends inside and the threaded mounting surface. Reattach the Brake Caliper Bracket and secure it in place only after cleaning both threads and surfaces with denatured alcohol. Utilize threadlocker gm p/n 12345493 (10953488 in Canada) for this step. Insert the two mounting bolts on the Brake Caliper Bracket and tighten them to 148 lb ft. Replug the anti-rattle clips and brake pads afterward while letting the pads reach the rotor. Start with engine off and lower the vehicle. Then attach the brake caliper, the components, wheel, and tire. Use a slow pedal press up to two-thirds distance to reach proper piston placement. Repeat until you achieve consistent brake effort.

Remove the caliper from the mounting bracket without disconnecting the hose, then take out the brake pads and the anti-rattle clips from the brake caliper bracket.

Tighten them to 175 Nm (121 ft. lbs.) for the 15 Series or 300 Nm (221 ft. lbs.) for the 25 Series.

Remove the brake caliper bolts.

First, raise and support the vehicle, then remove the tire and wheel assembly.

Reduce it to the midway point.

Reinstall the tire and wheel assembly, remove the safety stands, and lower the vehicle.

Place the brake caliper bracket back in position, ensuring to remove all traces of the original adhesive patch and clean the bolt threads with denatured alcohol before applying Threadlocker GM P/N 12345493 (Canadian P/N 10953488) to the threads.

Remove the brake pads and the anti-rattle clips from the brake caliper bracket.

Reinstall the tire and wheel assembly, lower the vehicle, and with the engine off, gradually apply the brake pedal to about 2/3 of its travel, then slowly release it. Repeat this process until a firm pedal is achieved, and fill the master cylinder reservoir to the proper level with clean brake fluid if necessary.

Reinstall the tire and wheel assembly.

Use hand tools only while holding the caliper guide pin with an open end wrench.

Remove the tire and wheel assembly.

Raise and support the vehicle, then remove the tire and wheel assembly.

Reattach the anti-rattle clips and brake pads, sliding the pads until they contact the rotor, then install the brake caliper.

Inspect the caliper operation and use a C-clamp to compress the brake caliper pistons.