GM Service Manual Online
For 1990-2009 cars only
  1. Remove the caliper to inspect the inside of the caliper assembly for signs of fluid leakage. Overhaul the caliper if any leakage is detected. Refer to Brake Caliper Overhaul .
  2. Inspect the mounting bolts and the sleeves for any corrosion.
  3. Replace any corroded bolts or sleeves. Do not attempt to polish away the corrosion.