CTS Sedan AWD V6-3.0L (2010)
24. Inspect the caliper bores for cracks, scoring, pitting, excessive corrosion.
25. 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.
26. If cracks, scoring, pitting, and excessive corrosion are present in the caliper bores, replace the caliper assembly.
27. Inspect the caliper pistons for cracks, scoring, and/or damage. Replace the caliper pistons if any of these conditions exist.
Assembly Procedure
1. Install the valve stem seal (2) over the threaded end of the bleeder valve (1).
Caution: Refer to Fastener Caution (See: Service Precautions/Vehicle Damage Warnings/Fastener Caution).
2. Install the brake caliper bleeder valve (1).
Tighten the bleeder valve to 14 Nm (124 lb in).
3. Install the brake caliper bleeder valve cap.
4. Lubricate the new piston seals (1) 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.
5. Install lubricated piston seals into the brake caliper bore seal grooves.
6. Make sure the seals are not twisted.
