GM Service Manual Online
For 1990-2009 cars only

Tools Required

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


    Object Number: 357011  Size: SH
  1. Remove the rear brake rotor. Refer to Rear Brake Rotor Replacement in Disc Brakes.

  2. Object Number: 177200  Size: SH
  3. Adjust the J 21177-A until it contacts the inside diameter of the rotor (1).

  4. Object Number: 177201  Size: SH
  5. Position the J 21177-A over the park shoe lining, left side shown, at the widest point (1).
  6. Turn the adjuster nut until the lining just contacts the J 21177-A .
  7. Repeat steps 1 through 3 to adjust the right rear park brake.
  8. The clearance between the rear park brake shoe lining and the rotor should be 0.66 mm (.026 in.)

  9. Object Number: 357011  Size: SH
  10. Install the rear brake rotor. Refer to Rear Brake Rotor Replacement in Disc Brakes.