GM Service Manual Online
For 1990-2009 cars only
  1. Inspect the inside of the caliper assembly for signs of fluid leakage. If any is found, overhaul the caliper as outlined in Brake Caliper Overhaul .
  2. Inspect the mounting bolts and sleeves for corrosion. Replace any corroded bolts and sleeves. Do not attempt to polish away the corrosion.
  3. Measure the clearance between the caliper and steering knuckle. The clearance at each end of the caliper should be measured individually and added together. This total should be 0.26-0.60 mm (0.010-0.024 in). If clearance is excessive, refer to Brake Caliper and Anchor Plate Wear Adjustment .