GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 42450-A Hub Cleaning Kit

Removal Procedure

    Important: Do not disconnect the brake hose from the caliper or separate the caliper from the caliper bracket.

  1. Remove the caliper bracket mounting bolts.
  2. Notice: Support the caliper with a piece of wire to prevent damage to the brake line.

  3. Remove and suspend the caliper and caliper bracket assembly.

  4. Object Number: 357057  Size: SH
  5. Remove and dispose of the sheet metal retainers.

  6. Object Number: 357011  Size: SH
  7. Remove the rotor. Slowly turn the rotor while pulling the rotor away from the axle flange.
  8. Inspect and clean all parts. Replace parts as necessary.
  9. Refinish the rotor if necessary. Refer to Brake Rotor Refinishing .

Installation Procedure

Caution: Do not move the vehicle until a firm brake pedal is obtained. Failure to obtain a firm pedal before moving vehicle may result in personal injury.

Notice: Whenever the rotor has been separated from the axle flange, clean any rust or foreign material from the mating surface of the axle flange and brake rotor. Failure to do this may result in increased lateral runout of the rotor and brake pulsation.


    Object Number: 409878  Size: SH
  1. Use the J 42450-A in order to clean the axle flange.

  2. Object Number: 357011  Size: SH
  3. Install the rotor. Slowly turn the rotor while pushing the rotor on the axle flange.
  4. Install the brake caliper bracket assembly. Refer to Brake Caliper Bracket Replacement .
  5. Install the brake pads. Refer to Rear Disc Brake Pads Replacement .
  6. Install the brake caliper. Refer to Rear Brake Caliper Replacement .
  7. Burnish replaced or refinished rotors. Refer to Brake Pad and Rotor Burnishing .