GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the tire and the wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  3. Important: Brake fluid in the caliper is subject to contamination by heat. Do not force the contaminated fluid back through the brake system.

  4. Open the bleeder screw.

  5. Object Number: 63934  Size: SH
  6. Attach a tube over the bleeder screw to catch the brake fluid in a container.

  7. Object Number: 219572  Size: SH
  8. Compress the piston into caliper housing bore to provide clearance between linings and rotor.

  9. Object Number: 219569  Size: SH
  10. Remove the front brake hose bolt (2).
  11. Remove the front brake hose (1).
  12. Remove the front brake hose seals (3).
  13. Discard the bolt and the seals.

  14. Object Number: 219575  Size: SH
  15. Remove the caliper guide pin bolts (discard bolts).
  16. Remove the caliper from the caliper bracket.

  17. Object Number: 219578  Size: SH
  18. Inspect the brake pads for un-even wear and maximum taper of 0.15 mm (0.006 in). Replace the brake pads if the pads are tapered beyond specification.
  19. If replacing the brake pads:
  20. 13.1. Disconnect the brake pad wear sensor electrical connector.
    13.2. Disconnect the brake pad wear sensor harness retainers from the front suspension strut.

            Important: Do not attempt to pry or pull the brake pad wear sensor out of the brake pad. The brake pad wear sensor must be pushed out of the brake pad.

    13.3.  Remove the inner brake pad from the caliper bracket with the brake pad wear sensor.
    13.4. Remove the brake pads (1) from the caliper bracket (2).
    13.5. Remove the brake pad wear sensor. Use a small punch to push the sensor throught the back side of the brake pad.

Installation Procedure


    Object Number: 219579  Size: SH
  1. Ensure the front brake caliper bracket mounting surfaces (1) are clean and lubricated.
  2. If replacing the brake pads:
  3. 2.1. Install the brake pad wear sensor to the inner brake pad.
    2.2. Connect the brake pad wear sensor harness and retainers to the front suspension strut.
    2.3. Connect the brake pad wear sensor electrical connector.

    Object Number: 219578  Size: SH
  4. Install the brake pads (1) into caliper bracket (2), if removed.

  5. Object Number: 219581  Size: SH
  6. Install the caliper (1).

  7. Object Number: 219575  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.

  8. Install new guide pin bolts.
  9. Tighten
    Tighten caliper guide pin bolts to 30 N·m (22 lb ft).


    Object Number: 219569  Size: SH
  10. Install the front brake hose (1).
  11. Install new front brake hose seals.
  12. Install a new front brake hose bolt (2).
  13. Tighten
    Tighten the front brake hose bolt to 40 N·m (30 lb ft).

  14. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding in Hydraulic Brakes.
  15. Install the tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and wheel.
  16. Lower the vehicle.
  17. Important: New braking surfaces must be broken in or burnished after brake pads are installed and/or after rotors are refinished. Avoid overheating the brakes.

  18. Make 20 stops from 48 km/h (30 mph) using medium to firm brake pedal pressure to burnish the brake rotors.