Grand Prix V8-5.3L (2007)
cannot be removed, replace the caliper assembly.
10. If cracks, scoring, pitting, excessive rust, and/or excessive corrosion are present in the caliper bore, replace the caliper assembly.
11. Inspect the caliper piston for cracks, scoring, and/or damage to the finished surface area. Replace the caliper piston if any of these conditions exist.
Installation Procedure
1. Lubricate the new piston seal with Delco Supreme 11(R), GM P/N 12377967 (Canadian P/N 992667) or equivalent, DOT-3 brake fluid from a
clean, sealed brake fluid container.
2. Install the lubricated, new piston seal into the caliper bore.
3. Install the caliper piston into the caliper bore. Press the piston to the bottom of the bore.
4. Install the new piston dust boot seal over the piston.
5. Use J 35777 to fully seat the caliper piston seal into the counterbore.
6. Install the bleeder valve and cap to the caliper and tighten the valve securely.
7. Install the front brake caliper to the vehicle.
Rear Brake Caliper Overhaul
Rear Brake Caliper Overhaul
Removal Procedure
Caution: Refer to Brake Dust Caution.
Caution: Refer to Brake Fluid Irritant Caution.
Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice.
1. Remove the rear brake caliper from vehicle.
Important: If the brake caliper was leaking brake fluid from the REAR of the caliper past the integral park brake actuator shaft seal,
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.
