GM Service Manual Online
For 1990-2009 cars only

Front Disc Brake Hardware Replacement 1500 Series

Caution: Refer to Brake Dust 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. 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: 1479402  Size: SH
  7. Remove the brake caliper bolts.
  8. 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.

    Notice: Refer to Brake Caliper Notice in the Preface section.


    Object Number: 1479403  Size: SH
  9. Remove the caliper from the caliper bracket.
  10. Support the caliper with heavy mechanic's wire or equivalent. DO NOT disconnect the hydraulic brake hose from the caliper.


    Object Number: 1479405  Size: SH
  11. Remove the brake pads from the caliper bracket.
  12. Remove the brake pad retainers.
  13. Inspect the disc brake hardware. Refer to Front Disc Brake Mounting and Hardware Inspection .

  14. Object Number: 1479416  Size: SH
  15. Remove the caliper pins, seals, and bushings from the caliper bracket.

Installation Procedure


    Object Number: 1479416  Size: SH
  1. Lubricate the caliper bushings, bolts and seals with high temperature silicone brake lubricant.
  2. Install the caliper pin bushings, seals and pins to the caliper bracket.

  3. Object Number: 1479405  Size: SH
  4. Install the brake pad retainers to the caliper bracket.
  5. Install the brake pads.

  6. Object Number: 1479403  Size: SH
  7. Install the caliper to the caliper bracket.
  8. Notice: Refer to Fastener Notice in the Preface section.


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

  11. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  12. With the engine OFF, gradually apply the brake pedal approximately 2/3 of its travel distance.
  13. Slowly release the brake pedal.
  14. Wait 15 seconds, then repeat steps 6-7 until a firm brake pedal is obtained. This will properly seat the caliper pistons and pads.
  15. Fill the master cylinder reservoir to the proper level with clean brake fluid, if necessary. Refer to Master Cylinder Reservoir Filling .

Front Disc Brake Hardware Replacement 2500 Series

Caution: Refer to Brake Dust 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: 789166  Size: SH
  7. Remove the brake caliper bolts.
  8. 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.

    Notice: Refer to Brake Caliper Notice in the Preface section.

  9. Remove the caliper from the caliper bracket.
  10. Support the caliper with heavy mechanic's wire or equivalent. DO NOT disconnect the hydraulic brake flexible hose from the caliper.


    Object Number: 369668  Size: SH
  11. Remove the brake pads from the caliper bracket.
  12. Remove the brake pad retainers.
  13. Inspect the disc brake hardware. Refer to Front Disc Brake Mounting and Hardware Inspection .

  14. Object Number: 344219  Size: SH
  15. Remove the caliper pin boots (4) from the caliper bracket (3).

Installation Procedure


    Object Number: 344219  Size: SH
  1. Lubricate the caliper bushings, bolts and seals with high temperature silicone brake lubricant.
  2. Install the caliper pin boots (4) to the caliper bracket (3).

  3. Object Number: 369668  Size: SH
  4. Install the brake pad retainers to the caliper bracket.
  5. Install the brake pads.

  6. 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.

  7. Install the caliper to the caliper bracket.
  8. Install the brake caliper bolts.
  9. Tighten
    Tighten the bolts to 108 N·m (80 lb ft).

  10. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  11. With the engine OFF, gradually apply the brake pedal approximately 2/3 of its travel distance.
  12. Slowly release the brake pedal.
  13. Wait 15 seconds, then repeat steps 6-7 until a firm brake pedal is obtained. This will properly seat the caliper pistons and pads.
  14. Fill the master cylinder reservoir to the proper level with clean brake fluid, if necessary. Refer to Master Cylinder Reservoir Filling .