GM Service Manual Online
For 1990-2009 cars only

Front Brake Caliper Mounting Plate Replacement Dayton-Walther 4500, 5500

Caution: Refer to Brake Dust Caution in the Preface section.

Use the brake caliper mounting plate in order to mount all of the stationary brake components. An L or R following the part number cast on the back of the plates indicates left or right side mounting. Some plates may also have an L or R painted on the front.

Removal Procedure

  1. Apply the parking brake.
  2. Block the wheels.
  3. Notice: Refer to Brake Caliper Notice in the Preface section.

  4. Remove the brake caliper. Refer to Front Brake Caliper Replacement .
  5. Do not remove the brake line from the caliper.
  6. Remove the hub and brake rotor assembly. Refer to Front Brake Rotor Replacement .

  7. Object Number: 1555757  Size: SH
  8. Remove the bolts and washers.
  9. Remove the brake caliper mounting plate.
  10. Inspect the support rails for rust, corrosion, and wear.
  11. Clean the support rails with a wire brush.
  12. Inspect the brake caliper mounting plate for cracks or elongated bolt holes.
  13. Replace the mounting plate, if necessary.

Installation Procedure


    Object Number: 1555757  Size: SH
  1. Install the brake caliper mounting plate to the steering knuckle.
  2. Important: Ensure that the threads are clean and greaseless before applying threadlocker.

  3. Apply 272 Threadlocker GM P/N 12345493 (Canadian P/N 10953488) or equivalent, to the threads of each brake caliper mounting plate bolt.
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Install the bolts and washers.
  6. Tighten

        • Tighten the brake shield bolts to 32 N·m (24 lb ft).
        • Tighten the brake caliper mounting plate bolts to 150 N·m (111 lb ft).
  7. Install the hub and brake rotor assembly. Refer to Front Brake Rotor Replacement .
  8. Install the brake caliper. Refer to Front Brake Caliper Replacement .
  9. Remove the blocks.