GM Service Manual Online
For 1990-2009 cars only

Front Brake Caliper Replacement 1500 Series

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

Caution: Refer to Brake Fluid Irritant Caution in the Preface section.

Removal Procedure


    Object Number: 1497134  Size: SH
  1. Inspect the fluid level in the brake master cylinder reservoir.
  2. If the fluid level is midway between the maximum-full point, and the minimum allowable level, no fluid needs to be removed from the reservoir before proceeding.
  3. If the fluid level is higher than midway between the maximum-full point, and the minimum allowable level, remove fluid to the midway point before proceeding.
  4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  5. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  6. Compress the brake caliper pistons.
  7. 6.1. Install 2 large C-clamps over the top of the caliper housing and against the back of the outboard pad.
    6.2. Slowly tighten the C-clamps until the pistons are pushed completely into the caliper bores.
    6.3. Remove the C-clamps from the caliper.

    Object Number: 1497135  Size: SH
  8. Clean all dirt and foreign material from around the brake hose fitting.
  9. Important: Install a rubber cap or plug to the exposed brake pipe fitting end to prevent brake fluid loss and contamination.

  10. Remove the brake hose to caliper bolt.
  11. Remove and discard the 2 copper brake hose gaskets. These gaskets may be stuck to the caliper or the brake hose end.
  12. Remove the brake hose from the caliper.

  13. Object Number: 1479402  Size: SH
  14. Remove the brake caliper bolts.

  15. Object Number: 1479403  Size: SH

    Caution: Do not depress the brake pedal with the brake rotors/calipers and/or the brake drums removed. Damage to the brake system may result. If brake system damage occurs and is not repaired, vehicle damage and/or personal injury or death may result.

  16. Remove the caliper from the caliper bracket.

Installation Procedure


    Object Number: 1479403  Size: SH
  1. Install the caliper to the caliper bracket.
  2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1479402  Size: SH
  3. Install the brake caliper bolts.
  4. Tighten
    Tighten the bolts to 100 N·m (74 lb ft).


    Object Number: 1497135  Size: SH
  5. Remove the rubber cap or plug from the exposed brake hose fitting end.
  6. Assemble 2 NEW copper brake hose gaskets to the brake hose bolt, and brake hose.
  7. Install the brake hose to caliper bolt.
  8. Tighten
    Tighten the bolt to 40 N·m (30 lb ft).

  9. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding .
  10. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  11. Fill the master cylinder reservoir to the proper level with clean brake fluid, if necessary. Refer to Master Cylinder Reservoir Filling .

Front Brake Caliper Replacement 2500 Series

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

Caution: Refer to Brake Fluid Irritant Caution in the Preface section.

Removal Procedure


    Object Number: 370154  Size: SH
  1. Inspect the fluid level in the brake master cylinder reservoir.
  2. If the fluid level is midway between the maximum-full point, and the minimum allowable level, no fluid needs to be removed from the reservoir before proceeding.
  3. If the fluid level is higher than midway between the maximum-full point, and the minimum allowable level, remove fluid to the midway point before proceeding.
  4. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  5. Compress the brake caliper pistons.
  6. 5.1. Install 2 large C-clamps over the top of the caliper housing and against the back of the outboard pad.
    5.2. Slowly tighten the C-clamps until the pistons are pushed completely into the caliper bores.
    5.3. Remove the C-clamps from the caliper.

    Object Number: 367082  Size: SH
  7. Clean all dirt and foreign material from around the brake hose fitting.
  8. Important: Install a rubber cap or plug to the exposed brake pipe fitting end to prevent brake fluid loss and contamination.

  9. Remove the brake hose to caliper bolt.
  10. Remove and discard the 2 copper brake hose gaskets. These gaskets may be stuck to the caliper or the brake hose end.
  11. Remove the brake hose from the caliper.

  12. Object Number: 789166  Size: SH
  13. Remove the brake caliper bolts.
  14. Caution: Do not depress the brake pedal with the brake rotors/calipers and/or the brake drums removed. Damage to the brake system may result. If brake system damage occurs and is not repaired, vehicle damage and/or personal injury or death may result.

  15. Remove the caliper from the caliper bracket.

Installation Procedure


    Object Number: 789166  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  1. Install the caliper to the caliper bracket.
  2. Install the brake caliper bolts.
  3. Tighten
    Tighten the bolts to 108 N·m (80 lb ft).


    Object Number: 367082  Size: SH
  4. Remove the rubber cap or plug from the exposed brake hose fitting end.
  5. Important: Install 2 NEW copper brake hose gaskets.

  6. Assemble the 2 NEW copper brake hose gaskets to the brake hose caliper bolt and the brake hose.
  7. Install the brake hose to caliper bolt.
  8. Tighten
    Tighten the bolt to 40 N·m (30 lb ft).

  9. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding .
  10. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  11. Fill the master cylinder reservoir to the proper level with clean brake fluid, if necessary. Refer to Master Cylinder Reservoir Filling .