Chevrolet Silverado / GMC Sierra. Service manual — part 1569

Fig. 8: Removing Brake Drum
Courtesy of GENERAL MOTORS CORP.

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

2. Remove the rear tire and wheel. Refer to Tire and Wheel Removal and Installation .

3. Disable the park brake cable automatic adjuster. Refer to Parking Brake Cable Adjuster

Disabling .

IMPORTANT: This procedure must be performed after replacing the brake

shoes or whenever the brake shoes have been removed.

2008 Chevrolet Silverado 1500

2008 BRAKES Drum Brakes - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

4. Remove the brake shoe adjuster access plug from the backing plate.

5. Insert a thin bladed tool (2) through the adjuster access hole in the backing plate until it

contacts the adjuster lever (4).

6. Push the adjuster lever away from the adjuster screw (1).

7. Using a suitable tool (3), rotate the adjuster screw upward.

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

Fig. 9: Cleaning Mating Surface Of Rear Axle Flange
Courtesy of GENERAL MOTORS CORP.

9. Using the J 42450-A (1), clean the mating surface of the rear axle flange.

2008 Chevrolet Silverado 1500

2008 BRAKES Drum Brakes - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 10: Measuring Brake Drum
Courtesy of GENERAL MOTORS CORP.

10. Using the J 21177-A (1), measure the inside diameter of the brake drum. See Special

Tools.

2008 Chevrolet Silverado 1500

2008 BRAKES Drum Brakes - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 11: Adjusting Rear Brake Shoes
Courtesy of GENERAL MOTORS CORP.

11. With the set screw (1) locked, place the opposite side of the J 21177-A over the brake

shoes. See Special Tools.

12. Rotate the brake shoe adjuster screw until the brake shoes just contact the J 21177-A . See

Special Tools.

13. Inspect the clearance between the brake shoes and the brake drum.

Specification: Approximately 0.76 mm (0.030 in)

2008 Chevrolet Silverado 1500

2008 BRAKES Drum Brakes - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado