GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 171943  Size: SH
  1. Remove two-thirds of the brake fluid from the master cylinder reservoirs.
  2. Raise the vehicle and support. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the tire and wheel assembly.
  4. Depress the piston into the brake caliper housing bore to provide clearance between the brake pads and the brake rotor.
  5. Make sure one end of the C-clamp or equivalent, rests on the inlet fitting bolt and the other end against the outboard brake pad.

  6. Object Number: 63984  Size: SH
  7. Remove the brake caliper guide pin bolts.

  8. Object Number: 171937  Size: SH
  9. Remove the brake caliper from the brake caliper mounting bracket and the brake rotor.
  10. Remove the brake pads.

Installation Procedure


    Object Number: 63984  Size: SH
  1. Install new brake pads on the brake caliper mounting bracket.
  2. 1.1. The outboard brake pad with insulator installed toward the brake caliper housing.
    1.2. The inboard brake pad with the wear sensor installed nearest the brake caliper piston.
    1.3. The wear sensor must be in the trailing position during forward wheel rotation.
    1.4. Replace brake pads in axle sets only.

    Object Number: 171937  Size: SH
  3. Install the brake caliper to the brake caliper mounting bracket and the brake rotor.

  4. Object Number: 63989  Size: SH
  5. Install the brake caliper guide pin bolts.
  6. Tighten
    Tighten the brake caliper guide pin bolts to 31 N·m (23 lb ft).

    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 tire and wheel assembly.
  8. Tighten
    Tighten the wheel nuts in sequence to 140 N·m (100 lb ft).

  9. Lower the vehicle.
  10. Refill the master cylinder to the proper level with clean, fresh brake fluid. Refer to Master Cylinder Description in Hydraulic Brakes.
  11. With the engine running, pump the brake pedal slowly and firmly to seat the brake pads.
  12. Inspect the hydraulic brake system for brake fluid leaks.
  13. Burnish brakes as necessary. Refer to Brake Pad and Rotor Burnishing .