GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

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

  1. Remove the brake drum. Refer to Brake Drum Replacement.

  2. Object Number: 2178347  Size: SH
  3. Remove the brake shoe adjuster actuator lever spring (1).

  4. Object Number: 2178348  Size: SH
  5. Remove the adjuster actuator lever (1).

  6. Object Number: 2178349  Size: SH
  7. Spread the brake shoes apart slightly and remove the brake shoe adjuster (1).
  8. Inspect and replace any missing, worn, or damaged drum brake adjuster hardware. Refer to Drum Brake Adjusting Hardware Inspection.

  9. Object Number: 2178350  Size: SH
  10. Remove the brake shoe hold down springs and cups (1).
  11. Compress the spring and rotate the assembly ¼ turn to remove from the hold down pins.


    Object Number: 2178351  Size: SH
  12. Remove the lower brake shoe spring (1).

  13. Object Number: 2178352  Size: SH
  14. Rotate the primary brake shoe (1) outward, disengage the return spring from the brake shoe web and remove the primary brake shoe.

  15. Object Number: 2178353  Size: SH
  16. Remove the brake shoe return spring (1).

  17. Object Number: 2178355  Size: SH
  18. Compress the park brake cable spring, disengage the park brake cable fitting end from the park brake lever and remove the secondary brake shoe (1).
  19. Clean the backing plate and apply high temperature brake lubricant to the brake shoe contact surfaces of the rear brake backing plate.
  20. Inspect and replace any missing, worn, or damaged drum brake hardware. Refer to Drum Brake Hardware Inspection.

Installation Procedure


    Object Number: 2178355  Size: SH
  1. Compress the park brake cable spring and insert the park brake cable fitting end to the park brake on the secondary brake shoe (1).
  2. Position the secondary brake shoe to the rear brake backing plate.


    Object Number: 2178353  Size: SH
  3. Install the brake shoe return spring (1).
  4. Insert the hook end of the return spring to the brake shoe from behind the web.


    Object Number: 2178352  Size: SH
  5. Install the primary brake (1) shoe return spring and position the primary brake shoe to the rear brake backing plate.
  6. Insert the hook end of the return spring to the brake shoe web from the outer face.


    Object Number: 2178351  Size: SH
  7. Install the lower brake shoe spring (1).

  8. Object Number: 2178350  Size: SH
  9. Install the brake shoe hold down springs and cups (1).
  10. Compress the spring and rotate the assembly ¼ turn to install to the hold down pins.

  11. Disassemble, clean and lubricate the threads of the brake shoe adjuster with high temperature brake lubricant.
  12. Assemble the brake shoe adjuster.

  13. Object Number: 2178349  Size: SH
  14. Spread the brake shoes apart slightly and install the brake shoe adjuster (1).

  15. Object Number: 2178348  Size: SH
  16. Install the adjuster actuator lever (1) to the pivot pin on the primary brake shoe.

  17. Object Number: 2178347  Size: SH
  18. Install the brake shoe adjuster actuator lever spring (1).
  19. Install the brake drum. Refer to Brake Drum Replacement.