GM Service Manual Online
For 1990-2009 cars only

Rotor Front

Removal Procedure

  1. Raise the vehicle and support. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the tire and wheel assembly.

  3. Object Number: 171943  Size: SH
  4. Depress the piston into the brake caliper housing to provide clearance between the brake pads and the brake rotor.

  5. Object Number: 171951  Size: SH
  6. Install a wheel nut to retain the brake rotor.
  7. Remove the brake caliper mounting bracket bolts and discard.
  8. Remove the brake caliper mounting bracket and the brake caliper as a unit.

  9. Object Number: 63987  Size: SH
  10. Remove the wheel nut retaining the brake rotor.
  11. Remove the brake rotor.
  12. Clean the metal contact surfaces between the brake rotor and the hub bearing flange.

Installation Procedure


    Object Number: 63987  Size: SH
  1. Install the brake rotor.
  2. Install a wheel nut to retain the brake rotor.

  3. Object Number: 171951  Size: SH
  4. Install the disc brake caliper mounting bracket and the brake caliper as a unit.
  5. Install the NEW brake caliper mounting bracket bolts.
  6. Tighten
    Tighten the brake caliper mounting bracket bolts to 225 N·m (166 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. Remove the wheel nut used to retain the brake rotor.
  8. Install the tire and wheel assembly.
  9. Tighten
    Tighten the wheel nuts in sequence to 140 N·m (100 lb ft).

  10. Lower the vehicle.
  11. With the engine running, pump the brake pedal slowly and firmly to seat the brake pads.
  12. Burnish the brakes as necessary. Refer to Brake Pad and Rotor Burnishing .

Rotor Rear

Removal Procedure


    Object Number: 171943  Size: SH
  1. Raise the vehicle and support. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the tire and wheel assembly.
  3. Depress the piston into the brake caliper housing to provide clearance between the brake pads and the brake rotor.

  4. Object Number: 171951  Size: SH
  5. Install a wheel nut to retain the brake rotor.
  6. Remove the brake caliper mounting bracket bolts and discard.
  7. Remove the brake caliper mounting bracket and the caliper as a unit and slave it to the vehicle so there is weight on the brake hose.

  8. Object Number: 64001  Size: SH
  9. Disconnect the park brake cable from the apply lever.
  10. Important: 

       • Never operate the parking brake with the rotor removed.
       • Do not force the rotor off. If the rotor is difficult to remove , ease it off by gently rotating it as you pull outward.


    Object Number: 63987  Size: SH
  11. Remove the wheel nut retaining the brake rotor.
  12. Remove the brake rotor.
  13. Clean the metal surfaces between the brake rotor and the hub bearing flange.

Installation Procedure


    Object Number: 63987  Size: SH
  1. Install the brake rotor.
  2. Adjust the shoe to drum clearance. Refer to Rear Parking Brake Shoe and Lining Adjustment in Parking Brake.
  3. Install a wheel nut to retain the brake rotor.

  4. Object Number: 171951  Size: SH
  5. Install the disc brake caliper mounting bracket and the brake caliper as a unit.
  6. Install NEW brake caliper mounting bracket bolts.
  7. Tighten
    Tighten the brake caliper mounting bracket bolts to 225 N·m (166 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.

  8. Remove the wheel nut used to retain the brake rotor.
  9. Install the tire and wheel assembly.
  10. Tighten
    Tighten the wheel nuts in sequence to 140 N·m (100 lb ft).

  11. Lower the vehicle.
  12. With the engine running, pump the brake pedal slowly and firmly to seat the brake pads.
  13. Burnish the brakes as necessary. Refer to Brake Pad and Rotor Burnishing .