Chevrolet Silverado / GMC Sierra. Service manual — part 1567

BRAKE DRUM REFINISHING

Tools Required

J 41013 Rotor Resurfacing Kit

Refinishing

1. Use a micrometer in order to measure the largest diameter of the brake drum. If the largest

diameter of the brake drum exceeds the brake drum maximum refinish diameter, DO NOT
refinish the brake drum. Replace the brake drum.

flange.

3. Adjust the drum brakes. Refer to Drum Brake Adjustment.

Special Tools:
J 42450-A Wheel Hub Resurfacing Kit

IMPORTANT: DO NOT refinish the brake drums in order to correct any of the

following complaints:

Brake noise (growl/squeal)

Premature brake lining wear

Cosmetic or superficial corrosion of the drum braking
surface

Drum discoloration

Refinish the brake drums ONLY when 1 or more of the following
conditions exist:

Severe scoring of the drum braking surface (groove depth in
excess of specification)

Brake pulsation caused by the following:

Brake drum out of round (runout in excess of
specification)

Corrosion or pitting that is deeper than the drum braking
surface

2008 Chevrolet Silverado 1500

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

2. Use the J 41013 or an equivalent tool in order to THOROUGHLY clean the rust from the

brake drum flange.

3. Refinish the brake drum. Refer to the brake lathe manufacturer's operating instructions.

4. After machining the brake drum, use 120 grit aluminum oxide sandpaper in order to create a

non-directional braking surface.

5. Clean the braking surfaces with GM P/N 12377981 (Canadian P/N 10953463) or

equivalent brake parts cleaner.

BRAKE SHOE REPLACEMENT

Fig. 4: Exploded View Of Brake Shoes And Components
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Failure to obtain the best possible braking surface finish

may cause the vehicle to stop with difficulty.

2008 Chevrolet Silverado 1500

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

Callout

Component Name

Preliminary Procedures

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

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

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

CAUTION:

Refer to Brake Dust Caution .

1

Adjuster Spring
Tip: Completely back off the brake shoe adjuster to ease removal of the
adjuster spring.

2

Adjuster Lever

3

Brake Shoe Adjuster
Procedure:
Clean and apply high temperature brake lubricant to the adjuster threads.

4

Brake Shoe Retractor Spring
Procedure:
Using the J 38400 or equivalent, release the brake shoe retractor spring from
the brake shoes. See Special Tools.
Special Tools:
J 38400 Brake Shoe Spanner and Spring Remover. See Special Tools.

5

Brake Primary Shoe

Procedure

1. Using a flat-bladed tool, press the lock tab on the park brake cable at the

lever.

2. When removing the park brake cable from the lever, the park brake return

spring will remain attached to the lever. DO NOT remove the return
spring from the lever. If the return spring separates from the lever, the
brake shoes must be replaced.

3. Hold the lock tab while simultaneously pushing the park brake cable

forward to release the park brake cable from the lever.

4. Remove the park brake cable from the lever.

5. Clean the backing plate and apply high temperature brake lubricant to the

brake shoe contact surfaces of the backing plate.

2008 Chevrolet Silverado 1500

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

REAR BRAKE BACKING PLATE REPLACEMENT

Fig. 5: View Of Rear Brake Backing Plate
Courtesy of GENERAL MOTORS CORP.

6

Brake Secondary Shoe

Procedure

1. Clean the backing plate and apply high temperature brake lubricant to the

brake shoe contact surfaces of the backing plate.

2. Adjust the drum brakes. Refer to Drum Brake Adjustment.

Callout

Component Name

Preliminary Procedures

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

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

CAUTION:

Refer to Brake Dust Caution .

2008 Chevrolet Silverado 1500

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