Impala V6-3.8L VIN K (2004)
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 II (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
Removal Procedure
1. Remove the rear brake caliper from the vehicle.
Caution: Do not place fingers in front of the caliper piston(s) in an attempt to catch or protect it when applying compressed air. The
piston(s) can fly out with force and could result in serious: bodily injury.
Notice: Use clean cloths to pad interior of caliper housing during piston removal. 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.
2. Remove the brake caliper, piston from the caliper bore by directing low pressure compressed air into the caliper bore through the fluid inlet hole.
