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Brake Caliper - Front Dual Piston: Disassembly

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain all the brake fluid from the caliper.
  2. Install a piece of wood or shop towels between the piston and the inside of the brake caliper.
  3. Remove the pistons from the caliper bores.
  4. Remove the boots from the caliper bores. Do not scratch the caliper bores.
  5. Remove the piston seals from the caliper bores. Do not use a metal tool.
  6. Remove the bleeder valve cap.
  7. Remove the bleeder valve from the caliper housing.
  8. Clean the bleeder valve, the caliper bores, the caliper passages and the pistons with denatured alcohol. Dry the parts and blow out the brake fluid passages. Use dry and filtered compressed air.
  9. Replace the pistons or the caliper if any of the following conditions exist:
    • Scoring on the piston surface or in the caliper bore.
    • Corrosion on the piston.
    • Chrome plating damage on the piston.
    • Corrosion in the caliper bore. Use a crocus cloth in order to polish light corrosion from the caliper bore. Replace the caliper if the corrosion cannot be removed.
    • Pitting in the caliper bore.
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