GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove two-thirds of the brake fluid from the master cylinder.
  2. Raise the vehicle and suitably support. Refer to Lifting and Jacking the Vehicle .
  3. Mark the relationship of the wheel to the axle flange.
  4. Remove the Wheel. Refer to Wheel Removal .

  5. Object Number: 105305  Size: SH

    Important: Do not use a screwdriver or pry bar in order to compress the caliper piston into the caliper. Any damage to the piston boot could cause corrosive elements to enter the piston sealing area and lead to the piston seizing in the caliper bore.

  6. Using a large C clamp, compress the caliper piston into the caliper bore completely.
  7. Important: Do not pinch the wear sensor wiring harness.

  8. Remove the brake pad wear sensor from the inner brake pad by pulling out.

  9. Object Number: 105290  Size: SH
  10. Remove the bottom caliper slide pin.

  11. Object Number: 105278  Size: SH
  12. Pivot the caliper body upward.

  13. Object Number: 105285  Size: SH
  14. Remove the inboard and the outboard pads from the anchor bracket.

  15. Object Number: 142015  Size: SH

    Important: Inspect the caliper bolt suspension boots for cuts, tears, or deterioration. If damaged, replace the pin boots. Refer to Brake Caliper Bracket Overhaul . Inspect the piston boot for deterioration. If damaged, refer to Brake Caliper Overhaul . Inspect the caliper pin bolt for damage or corrosion. Replace if damaged or corroded. Do not attempt to clean away corrosion. Corrosion is typically caused by damaged pin boots.

  16. Remove and inspect the pad retainers.

Installation Procedure


    Object Number: 142015  Size: SH
  1. Install the brake pad retainers into the caliper anchor bracket.

  2. Object Number: 105285  Size: SH
  3. Install both brake pads into the caliper anchor bracket.

  4. Object Number: 105282  Size: SH
  5. If new brake pads are being installed in the vehicle, you may need to bottom the caliper piston completely into the caliper bore. Use a large C clamp and compress the piston into the caliper bore.

  6. Object Number: 105283  Size: SH

    Important: The caliper piston boot must lay flat. Ensure that the convolutions are tucked into place.

  7. Use a small, plastic or wooden tool (1) in order to lift the inner edge of the boot next to the piston (2). Press out any trapped air.

  8. Object Number: 105287  Size: SH
  9. Pivot the caliper down over the brake pads and into the anchor bracket. Snap the brake pad wear sensor into the inner brake pad.

  10. Object Number: 105290  Size: SH
  11. Insert the lower caliper slide pin.
  12. Tighten
    Tighten the caliper slide pin to 85 N·m (63 lb ft).

  13. Install the tire and wheel assembly. Refer to Wheel Installation .
  14. Lower the vehicle.
  15. Start the vehicle. Apply approximately 778 N (175 lb) of force 3 times to the brake pedal in order to seat the brake caliper piston and the brake pads.
  16. Burnish the pads and rotors. Refer to Brake Pad and Rotor Burnishing .