GM Service Manual Online
For 1990-2009 cars only

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

  1. Inspect the brake drum lining for wear or stain with oil.

  2. Object Number: 1221273  Size: SH
  3. Measure the thickness.
  4. Specifications
    The lining wear limit value is 1 mm (0.039 in).

  5. If the measured value is within the limit value, or if a defect is found, replace the lining.