Removal Procedure

Release the parking brake.
Raise and support the vehicle. Refer to LIFTING AND JACKING THE VEHICLE .
Remove the rear tire and wheel assembly from the vehicle. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION .
Remove the drum.

Fig 1: Removing Drum

Courtesy of GENERAL MOTORS CORP.

If the drum does not remove easily, then complete the following steps:
1. 5.1. Remove the rear brake adjuster access hole plug.
2. 5.2. Insert a screwdriver through the hole in the backing plate. Hold the brake shoe adjuster actuator away from the park brake lever strut.
3. 5.3. Reduce the brake shoe adjustment by turning the park brake lever strut with another screwdriver.
4. 5.4. Remove the drum.
Fig 2: Inserting Screwdriver Through Hole In Backing Plate
Courtesy of GENERAL MOTORS CORP.
If the drum is rusted or corroded to the hub and the backing plate, then complete the following steps:
1. 6.1. Insert 2 bolts in the 2 holes of the drum.
2. 6.2. Turn the 2 bolts at the same time in the clockwise direction in order to loosen the drum from the backing plate.
3. 6.3. Remove the drum.
Inspect the drum. Refinish or replace as necessary. Refer to Brake Drum Surface and Wear Inspection .
Inspect the brake shoes and the drum brake components. Replace parts as necessary.