GM Service Manual Online
For 1990-2009 cars only

Front Disc Brake Hardware Replacement J55

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


    Object Number: 178630  Size: SH
  1. Remove the front brake caliper from the mounting bracket and support the brake caliper (2) with heavy mechanic's wire (1), or equivalent; do NOT disconnect the hydraulic brake flexible hose from the caliper. Refer to Front Brake Caliper Replacement.

  2. Object Number: 497759  Size: SH
  3. Remove the brake pads from the brake caliper bracket.
  4. Remove the brake pad retainers from the brake caliper bracket.

  5. Object Number: 696684  Size: SH
  6. Remove the front brake caliper bracket. Refer to Front Brake Caliper Bracket Replacement.
  7. Mount the brake caliper bracket in a vise.
  8. Using a flat bladed tool or punch carefully tap the pin bolt boots (1) from the brake caliper bracket (3).
  9. Use a screwdriver or a small hook and carefully pull the bushings inward and remove the bushings from the brake caliper.
  10. Remove the bushings (2) from the brake caliper bracket mounting bores.

  11. Object Number: 105270  Size: SH

    Important: 

       • Clean all parts in clean, denatured alcohol.
       • Dry with non-lubricated compressed air.
       • Inspect the brake caliper bracket for cracks. If cracked, replace the brake caliper bracket.

  12. Apply a thin coat of high temperature silicone lube to the new bushings (2).
  13. Install new bushings (2) into bracket mounting bores.
  14. Apply a thin coat of high temperature silicone lube to the new caliper pin bolt boots (3).
  15. Install the front brake caliper bracket. Refer to Front Brake Caliper Bracket Replacement.
  16. Install the brake pad retainer to the caliper bracket.
  17. Install the brake pads to the caliper bracket.
  18. Install the front brake caliper. Refer to Front Brake Caliper Replacement.

Front Disc Brake Hardware Replacement without J55

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

Removal Procedure


    Object Number: 178630  Size: SH
  1. Remove the brake caliper from the mounting bracket and support the brake caliper (2) with heavy mechanic's wire (1), or equivalent. Discard the old caliper pin bolts, new bolts are supplied in the hardware kit. It is not necessary to disconnect the hydraulic brake flexible hose from the caliper. Refer to Front Brake Caliper Replacement .

  2. Object Number: 727742  Size: SH
  3. Remove the brake pads (2) from the brake caliper bracket.
  4. Remove the brake pad retainers (1) from the brake caliper bracket.

  5. Object Number: 661837  Size: SH
  6. Remove the brake caliper bracket. Refer to Front Brake Caliper Bracket Replacement .
  7. Mount the brake caliper bracket (1) in a vise.
  8. Using a flat bladed tool or punch carefully remove the caliper pin boots (2) from brake caliper bracket (1) and discard.
  9. Important: Wipe the old grease from the brake caliper pin bolts with a clean shop towel.

  10. Inspect the brake caliper bracket for cracks. If cracked, replace bracket.

Installation Procedure


    Object Number: 793825  Size: SH
  1. Apply a thin coat of NIGLUBE® to the following:
  2. • To the caliper bores (3)
    • To the inside of the pin boots (2)
    •  To the new caliper pin bolts (4)
  3. Install new caliper pin bolt boots (2) to the caliper.

  4. Object Number: 727742  Size: SH
  5. Install the brake caliper bracket (3). Refer to Front Brake Caliper Bracket Replacement .
  6. Install the brake pad retainers (1) to the caliper bracket.
  7. Install the brake pads (2) to the caliper bracket.

  8. Object Number: 178630  Size: SH
  9. Remove the heavy mechanics wire (1).
  10. Install the brake caliper. Refer to Front Brake Caliper Replacement .