GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 Allure 🢒 Brakes 🢒 Hydraulic Brakes 🢒 Rear Brake Caliper Bracket Replacement

Removal Procedure

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


    Object Number: 178630 Size: SH

    Caution: Support the brake caliper with heavy mechanic wire, or equivalent, whenever it is separated from its mount and the hydraulic flexible brake hose is still connected. Failure to support the caliper in this manner will cause the flexible brake hose to bear the weight of the caliper, which may cause damage to the brake hose and in turn may cause a brake fluid leak.

  1. Remove the brake caliper from the mounting bracket and support the brake caliper (2) with heavy mechanics wire (1), or equivalent. Do NOT disconnect the hydraulic brake flexible hose from the caliper. Refer to Rear Brake Caliper Replacement.
  2. Remove the brake pads from the brake caliper bracket (3).
  3. Remove the brake pad retainers from the brake caliper bracket (3).

    4. Object Number: 680323 Size: SH
  4. Remove the brake caliper bracket bolts (1).
  5. Remove the rear brake caliper bracket.
  6. Use a wire brush to remove any rust and debris from the brake caliper bracket.
  7. Inspect the brake mounting and hardware. Refer to Rear Disc Brake Hardware Replacement.

Installation Procedure

Note: The caliper bracket bolts threads and the threaded holes of the caliper bracket must be free of threadlocker residue and debris prior to re-application of threadlocker in order to ensure proper adhesion and fastener retention.

   • Prepare the bolts and the threaded holes for assembly.
   • Thoroughly clean the residue from the fastener threads using denatured alcohol or equivalent and allow to dry.
   • Thoroughly clean the residue from the threaded holes using denatured alcohol or equivalent and allow to dry.
   • If reusing the old caliper bracket bolts, apply threadlocker GM P/N 12345493 (Canadian P/N 10953488), or equivalent to 2/3 of the threaded length of the fastener. Ensure that there are no gaps in the threadlocker along the length of the filled area of the fastener.
   • Allow the threadlocker to cure approximately ten minutes before installation.


    Object Number: 680323 Size: SH
  1. Install the brake caliper bracket.

    2. Caution: Refer to Fastener Caution in the Preface section.

  2. Install the brake caliper bracket bolts (1) and tighten to 120 N·m (89 lb ft).
  3. Lubricate the brake caliper pin bolts with a thin coat of high temperature silicone lube.
  4. Install the brake pad retainers to the brake caliper bracket.
  5. Install the brake pads to the brake caliper bracket.
  6. Install the brake caliper. Refer to Rear Brake Caliper Replacement.