GM Service Manual Online
For 1990-2009 cars only

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


Object Number: 178990  Size: SH
  1. Visually inspect the adjuster actuator spring (2) for the following:
  2. • Excessive corrosion
    • Excessive stretching
    • Broken hook ends
    • Twisting or binding
    • Missing
  3. If any of the conditions listed were found, the drum brake system adjuster hardware requires replacement.
  4. Visually inspect the adjuster actuator lever (1) for the following conditions:
  5. • Bent
    • Broken
    • Missing
    • Broken spring attachment tab
  6. If any of the conditions listed were found, the adjuster actuator lever and/or attaching hardware requires replacement.