CTS V8-5.7L VIN P (2004)
14. Using a small wooden or plastic tool, remove the piston dust boot seal (2) from the seal counter-bore in the brake caliper and discard the boot seal.
15. Using a small wooden or plastic tool, remove the piston seal (1) from the brake caliper bore and discard the piston seal.
16. Remove the brake caliper bleeder valve cap.
17. Remove the brake caliper bleeder valve (1).
18. Important: Do not use abrasives to clean the brake caliper piston.
Inspect the brake caliper mounting bracket guide surfaces for corrosion and wear. Remove and replace the brake caliper mounting bracket if
damaged or worn .
19. Clean the brake caliper piston bores and seal counter-bores with denatured alcohol, or equivalent.
20. Clean the brake caliper pistons with denatured alcohol, or equivalent.
21. Dry the caliper piston bores and counter-bores with non-lubricated, filtered air.
22. Dry the brake caliper pistons with non-lubricated, filtered air.
23. Inspect the caliper bores for cracks, scoring, pitting, excessive corrosion.
24. If light corrosion is present in the caliper bores, attempt to remove the imperfection with a fine emery paper. If the imperfection cannot be
removed, replace the caliper assembly.
25. If cracks, scoring, pitting, and excessive corrosion are present in the caliper bores, replace the caliper assembly.
26. Inspect the caliper pistons for cracks, scoring, and/or damage. Replace the caliper pistons if any of these conditions exist.
Assembly Procedure
1. Notice: Refer to Fastener Notice in Service Precautions.
Install the brake caliper bleeder valve (1).