GM Service Manual Online
For 1990-2009 cars only

Rear Brake Rotor Replacement J55

Tools Required

    • J 41013 Rotor Resurfacing Kit
    • J 42450-A Wheel Hub Resurfacing Kit

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

Removal Procedure

  1. Release the park brake.
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  4. Notice: Support the brake caliper with heavy mechanic wire, or equivalent, whenever it is separated from its mount and the hydraulic flexible brake hose is still connected. Failure to support the caliper in this manner will cause the flexible brake hose to bear the weight of the caliper, which may cause damage to the brake hose and in turn may cause a brake fluid leak.

  5. Remove the brake caliper and bracket from the vehicle, support the caliper assembly away from the rotor. Refer to Rear Disc Brake Pads Replacement .

  6. Object Number: 370049  Size: SH
  7. Remove the brake rotor. Slowly turn the brake rotor while pulling the brake rotor away from the hub and bearing assembly.

Installation Procedure

Important: Whenever the brake rotor has been separated from the wheel bearing flange, clean any rust or contaminants from the wheel bearing flange and the brake rotor mating surfaces. Failure to do this may result in increased lateral runout of the brake rotor, and brake pulsation.


    Object Number: 370049  Size: SH
  1. Use J 42450-A to clean all rust and contaminants from both sides of the brake rotor and the hub flange.
  2. Use J 41013 to clean the rust from the brake rotor flange.
  3. Install the brake rotor. Slowly turn the brake rotor while pushing the brake rotor towards the hub and bearing assembly.
  4. Install the brake caliper and the brake caliper bracket as an assembly. Refer to Rear Disc Brake Pads Replacement .
  5. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  6. Lower the vehicle.

Rear Brake Rotor Replacement Without J55

Tools Required

    • J 41013 Rotor Resurfacing Kit
    • J 42450-A Wheel Hub Resurfacing Kit

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

Removal Procedure


    Object Number: 654855  Size: SH
  1. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  2. Notice: Support the brake caliper with heavy mechanic wire, or equivalent, whenever it is separated from its mount and the hydraulic flexible brake hose is still connected. Failure to support the caliper in this manner will cause the flexible brake hose to bear the weight of the caliper, which may cause damage to the brake hose and in turn may cause a brake fluid leak.

  3. Remove the brake caliper and bracket from the vehicle, support the caliper assembly away from the rotor. Refer to Rear Brake Caliper Bracket Replacement .
  4. Mark the relationship of the rotor to the hub.
  5. Remove the brake rotor.

Installation Procedure

    Important: Whenever the rotor has been separated from the wheel bearing flange, clean any rust or contaminants from the wheel bearing flange and the brake rotor mating surfaces. Failure to do this may result in increased lateral runout of the brake rotor, and brake pulsation.


    Object Number: 654855  Size: SH
  1. Use the J 41013 in order to thoroughly clean any corrosion from the wheel bearing flange.
  2. Use the J 42450-A in order to thoroughly clean any corrosion/rust from the brake rotor mating surface and mounting face.
  3. Install the brake rotor over the wheel studs onto the wheel bearing flange.
  4. Install the brake caliper and bracket assembly. Refer to Rear Brake Caliper Bracket Replacement .
  5. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.