GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the drum. Refer to Propeller Shaft Parking Brake Drum Replacement .

  2. Object Number: 156638  Size: SH
  3. Release the tension from the index lever by unhooking the spring from the index lever.
  4. Remove the transmission yoke bolt from the automatic transmission or nut from the manual transmission.
  5. Pull out on the transmission yoke to remove it from the transmission.
  6. Remove the support plate bolts and washers.
  7. Remove the backing plate, support plate, index lever and spring, and park brake shoe assembly from the vehicle.

  8. Object Number: 156625  Size: SH
  9. Separate the support plate and the park brake shoe assembly from the backing plate.
  10. Remove the park brake hardware.

Installation Procedure

Important: Prior to installation apply a high temperature silicone lubricant to all of the brake component metal contact points where the brake shoe metal contacts the backing plate, the wheel cylinder and the adjustment strut, etc.


    Object Number: 156625  Size: SH
  1. Install the park brake hardware.
  2. Install the support plate and park brake shoe assembly to the backing plate.
  3. Install the index lever and spring assembly between the shoes.

  4. Object Number: 156641  Size: SH
  5. Install the backing plate, support plate, index lever and spring, and park brake shoe assembly to the vehicle.
  6. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  7. Install the support plate washers and bolts.
  8. Tighten
    Tighten the bolts to 105 N·m (77 lb ft).


    Object Number: 156638  Size: SH
  9. Install the tension arm of the spring to the index lever.
  10. Install the transmission yoke to the transmission.
  11. Install the transmission yoke bolt to the automatic transmission or nut to the manual transmission.
  12. Tighten

        • Tighten the bolt to 122 N·m (90 lb ft).
        • Tighten the nut to 475 N·m (350 lb ft).
  13. Install the drum. Refer to Propeller Shaft Parking Brake Drum Replacement .
  14. Adjust the park brake. Refer to Park Brake Adjustment .
  15. Remove the safety stands and lower the vehicle.