GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

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

Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in the Preface section.

  1. Inspect the fluid level in the brake master cylinder reservoir.
  2. If the brake fluid level is midway between the maximum full point and the minimum allowable level, then no brake fluid needs to be removed from reservoir before proceeding.
  3. If the brake fluid level is higher than midway between the maximum full point and the minimum allowable level, then remove brake fluid to the midway point before proceeding.

  4. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  5. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  6. Hand tighten 2 wheel nuts in order to retain the rotor to the hub.

  7. Object Number: 177027  Size: SH
  8. Push the piston into the caliper bore in order to provide clearance between the linings and the rotor:
  9. 6.1. Install a large C-clamp (2) over the top of the caliper housing and against the back of the outboard pad.
    6.2. Slowly tighten the C-clamp (2) until the piston is pushed into the caliper bore far enough to slide the caliper assembly off the rotor.

    Object Number: 176035  Size: SH
  10. Remove the brake hose to caliper bolt (1).
  11. Remove and discard the 2 copper brake washers (3).
  12. Plug the caliper housing and brake hose in order to prevent fluid loss and contamination. The cover on the bleeder will work as a plug in the caliper.

  13. Object Number: 219575  Size: SH
  14. Remove the brake caliper bolts. It may be necessary to use a wrench in order to hold the brake caliper pin from rotating.

  15. Object Number: 695066  Size: SH
  16. Remove the 2 guide pins (5) from the caliper mounting bracket (3).
  17. Inspect the boots (4) for cuts or nicks that would allow contamination to enter the caliper mounting bracket (3).
  18. Inspect the guide pins (5) and caliper mounting bracket (3) for corrosion.
  19. Important: Do not attempt to polish away corrosion.

  20. If the guide pin boots (4) are damaged or the guide pins (5) and caliper mounting bracket (3) show signs of corrosion replace with new parts.

Installation Procedure


    Object Number: 695066  Size: SH
  1. Lubricate the caliper pins (5) and the boots (4) with high temperature silicone brake lubricant or equivalent.
  2. Install the caliper pins (5) and the boots (4) to the caliper mounting bracket (3).

  3. Object Number: 357034  Size: SH
  4. Install the caliper to the caliper mounting bracket.

  5. Object Number: 695066  Size: SH
  6. Install the caliper bolts (1) through the caliper (2) and into the caliper pins (5).
  7. 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.

    Tighten
    Tighten the 2 caliper bolts to 31 N·m (23 lb ft).


    Object Number: 176035  Size: SH
  8. Install the brake hose to caliper bolt (1) with 2 new copper washers (3) and the brake hose  (2) to the caliper.
  9. Tighten
    Tighten the brake hose to caliper bolt to 50 N·m (37 lb ft).

  10. Remove the 2 wheel lug nuts retaining the rotor to the hub.
  11. Install the wheel and tire assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  12. Lower the vehicle.
  13. Fill the master cylinder to the proper level with clean brake fluid. Refer to Master Cylinder Reservoir Filling in Hydraulic Brakes.
  14. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding .
  15. Inspect the hydraulic brake system for leaks.