2005 Buick LeSabre Brake Caliper

You should lubricate the brake caliper pin bolts with a thin coat of high-temperature silicone lube, install the brake caliper to the upper caliper pin bolt and rotate the brake caliper down over the brake pads into the brake caliper bracket.

If the brake fluid level is midway between the maximum-full point and the minimum allowable level, no brake fluid needs to be removed from the reservoir before proceeding. If the brake fluid level is higher than midway between the maximum-full point and the minimum allowable level, you should remove the brake fluid to the midway point before proceeding.

If the brake caliper was leaking brake fluid from the REAR of the caliper past the integral park brake actuator shaft seal, you should replace the brake caliper assembly. The park brake integral mechanism contains a non-serviceable seal which may be allowing brake fluid to leak past it and into the non-serviceable integral park brake mechanism. The park brake lever, lever return spring, and actuator shaft seal are the only components of the integral park brake mechanism that can be removed or replaced. You can not disassemble the integral park brake mechanism. If the integral park brake mechanism was not operating properly binding or seized, you should replace the brake caliper assembly.

You can not place your fingers in front of the piston to catch or protect the piston while applying compressed air. This could result in serious injury. You should use clean cloths to pad the interior of the caliper housing during piston removal and use just enough air to ease the pistons out of the bores. If the pistons are blown out, even with the padding provided, it may be damaged.

You should use clean cloths to pad the interior of the caliper housing during piston removal and use just enough air to ease the pistons out of the bores. If the pistons are blown out, even with the padding provided, it may be damaged. The caliper bracket bolt threads and the threaded holes of the caliper bracket must be free of thread locker residue and debris before re-application of the thread locker to ensure proper adhesion and fastener retention. If reusing the old caliper bracket bolts, you should apply thread locker GM P/N 12345493, (Canadian P/N 10953488), or equivalent to two-thirds of the threaded length of the fastener and ensure that there are no gaps in the thread locker along the length of the filled area of the fastener.