GM Service Manual Online
For 1990-2009 cars only

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

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.

Removal Procedure

  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, no brake fluid needs to be removed from the reservoir before proceeding.
  3. If the brake fluid level is higher than midway between the maximum-full point and the minimum allowable level, remove brake fluid to the midway point before proceeding.
  4. Raise the vehicle and suitably support. 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. Object Number: 492729  Size: SH
  7. Pull down on the front park brake cable (3).
  8. Remove the front park brake cable from the park brake cable connector (1).
  9. Notice: When using a large C-clamp to compress a caliper piston into a caliper bore of a caliper equipped with an integral park brake mechanism, do not exceed more than 1 mm (0.039 in) of piston travel. Exceeding this amount of piston travel will cause damage to the internal adjusting mechanism and/or the integral park brake mechanism.

  10. Install a large C-clamp over the top of the brake caliper housing and against the back of the outboard brake pad.
  11. • Compress the brake caliper piston into brake caliper bore to allow the piston enough clearance to slide the brake caliper off the brake rotor.
    • Remove the C-clamp.

    Object Number: 700955  Size: SH
  12. Remove the electronic brake pad wear sensor retainer clip from the caliper.
  13. Carefully hold the electronic pad wear sensor wire (1) snug, and with a small flat blade screw driver gently pry up on the electronic brake pad wear sensor to remove it from the inner brake pad (2).
  14. Disconnect the electronic brake pad wear sensor wire connector.
  15. Remove the electronic brake pad wear sensor wire from the caliper.

  16. Object Number: 420701  Size: SH
  17. Remove the brake caliper inlet fitting bolt to the brake caliper.
  18. Remove the brake hose from the brake caliper.
  19. Remove and discard the two copper brake hose gaskets. These gaskets may be stuck to the brake caliper and/or the brake hose end.
  20. Plug the opening in the brake caliper and pipe to prevent fluid loss and/or contamination.

  21. Object Number: 617277  Size: SH
  22. Disconnect the park brake cable bracket (2) from the brake caliper (1).
  23. Disconnect the park brake cable from the park brake lever on the brake caliper.

  24. Object Number: 701969  Size: SH
  25. Remove the lower brake caliper pin bolt.
  26. Rotate the brake caliper up.
  27. Slide the brake caliper off the upper pin bolt to remove.

Installation Procedure

  1. If reusing the brake caliper retainers and sleeves, clean the sleeves using denatured alcohol, or equivalent.
  2. Lubricate the brake caliper pin bolts with hi temperature silicone lube.
  3. Install the brake caliper to the upper caliper pin bolt.

  4. Object Number: 105773  Size: SH
  5. Rotate the brake caliper (6) down over the brake pads, onto the brake caliper bracket (5).
  6. 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 lower brake caliper pin bolt.
  8. Tighten
    Tighten the brake caliper pin bolt to 27 N·m (20 lb ft).

  9. Remove the plugs in the brake hose end.
  10. Important: Install NEW copper brake hose gaskets.

  11. Assemble the brake hose bolt and the NEW copper brake hose gaskets to the brake hose.

  12. Object Number: 420701  Size: SH
  13. Install the brake hose to caliper bolt to the brake caliper.
  14. Tighten
    Tighten the brake hose to caliper bolt to 45 N·m (33 lb ft).


    Object Number: 700955  Size: SH
  15. Install the electronic brake pad wear sensor wire (1) to the caliper (2).
  16. Connect the electronic brake pad wear sensor wire connector.
  17. Snap the electronic brake pad wear sensor into the inner brake pad.
  18. Install the electronic brake pad wear sensor retainer clip to the caliper.

  19. Object Number: 617277  Size: SH
  20. Connect the park brake cable to the park brake lever on the brake caliper.
  21. Install the park brake cable bracket (2) to the brake caliper (1).
  22. Install the park brake cable bracket bolt.
  23. Tighten
    Tighten the park brake cable bracket bolt to 43 N·m (32 lb ft).


    Object Number: 492729  Size: SH
  24. Install the front park brake cable (3) to the park brake cable connector (1).
  25. Bleed the brake system. Refer to Hydraulic Brake System Bleeding in Hydraulic Brakes.
  26. With the engine OFF, gradually apply the brake pedal to approximately 2/3 of its travel distance.
  27. Slowly release the brake pedal.
  28. Wait 15 seconds, then repeat steps 19-20 until a firm brake pedal apply is obtained. This will properly seat the brake caliper pistons and brake pads.
  29. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  30. Lower the vehicle.