GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 21177-A Drum-to-Brake Shoe Clearance Gage


    Object Number: 177186  Size: SH
  1. Remove the rear caliper bracket. Refer to Rear Brake Caliper Bracket Replacement in Disc Brakes.
  2. Remove the rotor. Refer to Rear Brake Rotor Replacement in Disc Brakes.
  3. Loosen the adjusting nut on the parking brake cable until the lever is at the rest position. Refer to Park Brake Cable Service/Adjustment .

  4. Object Number: 177200  Size: SH
  5. Set the J 21177-A so that the J 21177-A contacts the inside diameter of the rotor(1).

  6. Object Number: 177201  Size: SH
  7. Position the J 21177-A over the shoe and lining (1) at the widest point.
  8. Turn the adjuster nut until the lining just contacts the J 21177-A .
  9. Repeat steps two through five for the opposite side.
  10. Adjust the adjusting nut on the rear parking brake cable. Refer to Park Brake Cable Service/Adjustment .

    Object Number: 177186  Size: SH
  1. Tighten the parking brake cable adjusting nut. Refer to Park Brake Cable Service/Adjustment .
  2. Install the rear rotor. Refer to Rear Brake Rotor Replacement in Disc Brakes.
  3. Install the rear caliper bracket. Refer to Rear Brake Caliper Bracket Replacement in Disc Brakes.