GM Service Manual Online
For 1990-2009 cars only

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

  1. Inspect the drum for cracks or damage.

  2. Object Number: 1221275  Size: SH
  3. Measure the inside diameter.
  4. Specification
    The inside diameter wear limit value is 182 mm (7.165 in).

  5. If the measured value is over the limit value, or if a defect is found, replace the drum.