GM 25997055
Caliper Bracket, Passenger Side

First check the fluid level inside the brake master cylinder reservoir before starting front Brake Caliper Bracket replacement. The fluid level requires no adjustment when measured at the midway point but requires reduction to mean level if it exceeds this measurement. Compresse the caliper pistons through the use of two large c-clamps positioned against the outboard pad on the back of the caliper housing. Tighten the clamps until all pistons are fully extended. After supporting the caliper with heavy mechanic's wire you must remove the brake caliper bolts and brake pads and anti-rattle clips and Brake Caliper Bracket bolts to remove the Brake Caliper Bracket . Residue should be cleaned off both from inside Brake Caliper Bracket ends and from mounting area surface and threads. To install the Brake Caliper Bracket set it back in position after using denatured alcohol to clean bolt threads and threadlocker gm p/n 12345493 (Canadian P/N 10953488) is applied to the threads. After tightening the Brake Caliper Bracket bolts to 300 nm (221 ft. Lbs.), install the anti-rattle clips and brake pads while moving them to meet the rotor. After tightening brake caliper bolts to 108 nm (80 ft. Lbs.), reinstall the wheel and tire assembly and perform the following brake pedal routine: keep the engine off while pressing the pedal to about 2/3 of its capacity before a gradual pedal release. Repetitions of a 15-second pedal application followed by another 15-second period help position the caliper pistons and pads along with adequate fluid level maintenance in the reservoir when needed.

Check the brake master cylinder fluid before replacing the front Brake Caliper Bracket on 1500 series by draining excess fluid to the midway point between markings. Hook two c-clamps onto the caliper housing to push back its pistons until they extend fully while pressing them against the rear of the outboard pad. Once you rid yourself of the c-clamps you must uninstall the brake caliper bolts while keeping the brake components detached so footage on the brake pedals will not harm anything. Secure the caliper with mechanic's wire and let the hydraulic brake hose stay connected before removing brake pads and clips. After that, take out the Brake Caliper Bracket bolts to take off the whole bracket assembly. Wipe all debris from the surfaces and holes on the bracket before starting installation. Use new Brake Caliper Bracket while removing old adhesive from its mounting surface and treating bolt threads with denatured alcohol before adding threadlocker gm p/n 12345493 (Canadian P/N 10953488) to the threads. Insert and tighten the Brake Caliper Bracket bolts to 180 nm (133 ft lbs). Then position the anti-rattle clips and install the brake pads on the rotor surface. Push the caliper onto its bracket and fasten it by tightening the brake caliper bolts to 100 nm. Reposition the tire and wheel parts then let the vehicle down and press the brake pedal halfway without starting the engine before easing off the pressure. Keep repeating the test until the pedal feels solid and add clean brake fluid to reach the correct reservoir level when necessary.

Remove the two brake caliper bracket mounting bolts and the brake caliper bracket itself.

With the engine off, gradually apply the brake pedal to about 2/3 of its travel, then slowly release it.

Lower the vehicle, and with the engine off, gradually apply the brake pedal to about 2/3 of its travel distance, then slowly release it. Wait 15 seconds and repeat this process until a firm pedal is achieved, ensuring proper seating of the brake caliper pistons and brake pads.

Attach the anti-rattle clips and brake pads.

Tighten them to 200 Nm (148 ft. lbs.) for JH5 brake systems or 300 Nm (221 ft. lbs.) for JH6/JH7 systems.

Remove any original adhesive patch and clean the bolt threads with denatured alcohol.

Remove the tire and wheel assembly.

Install the anti-rattle clips and brake pads, sliding them until they contact the rotor.

Fill it to the correct level with clean brake fluid if necessary.

Install the brake caliper bracket bolts and tighten them to 200 Nm (148 ft. lbs.).

Clean any contaminants from the inside ends of the bracket and the mounting surface and threads.