Chevrolet Silverado / GMC Sierra. Service manual — part 2377

Fig. 6: View of Brake Pedal Pushrod
Courtesy of GENERAL MOTORS CORP.

1. Disconnect the brake pedal pushrod (1) from the brake pedal.

2. Inspect the brake pedal pushrod eyelet bushing (2), if equipped, for cracks and/or excessive

wear.

3. Reposition the pedal pushrod boot (3) toward the front of the vehicle to expose as much of

the pedal pushrod (1) as possible.

4. Inspect the brake pedal pushrod (1) for straightness.

5. If the brake pedal pushrod eyelet bushing (2) exhibited cracks and/or excessive wear, then

the bushing requires replacement.

6. If the brake pedal pushrod (1) is not straight, then the pushrod requires replacement.

7. Return the pedal pushrod boot (3) to its original position on the pedal pushrod (1).

8. Connect the brake pedal pushrod (1) to the brake pedal.

REPAIR INSTRUCTIONS

2008 Chevrolet Silverado 1500

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

MASTER CYLINDER RESERVOIR FILLING

1. Visually inspect the brake fluid level through the brake master cylinder reservoir.

2. If the brake fluid level is at or below the half-full point during routine fluid checks, the

brake system should be inspected for wear and possible brake fluid leaks.

3. If the brake fluid level is at or below the half-full point during routine fluid checks, and an

inspection of the brake system did not reveal wear or brake fluid leaks, the brake fluid may
be topped-off up to the maximum-fill level.

4. If brake system service was just completed, the brake fluid may be topped-off up to the

maximum-fill level.

5. If the brake fluid level is above the half-full point, adding brake fluid is not recommended

under normal conditions.

6. If brake fluid is to be added to the master cylinder reservoir, clean the outside of the

reservoir on and around the reservoir cap prior to removing the cap and diaphragm. Use
only Delco Supreme 11®, GM P/N 12377967 (Canadian P/N 992667), or equivalent DOT-
3 brake fluid from a clean, sealed brake fluid container.

MASTER CYLINDER RESERVOIR REPLACEMENT (JD9, JF3, JF7)

CAUTION: Refer to Brake Fluid Irritant Caution .

NOTE:

When adding fluid to the brake master cylinder reservoir, use only
Delco Supreme 11®, GM P/N 12377967 (Canadian P/N 992667), or
equivalent DOT-3 brake fluid from a clean, sealed brake fluid
container. The use of any type of fluid other than the recommended
type of brake fluid, may cause contamination which could result in
damage to the internal rubber seals and/or rubber linings of
hydraulic brake system components.

NOTE:

Refer to Brake Fluid Effects on Paint and Electrical Components
Notice .

2008 Chevrolet Silverado 1500

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

Fig. 7: Master Cylinder Reservoir Replacement (JD9, JF3, JF7)
Courtesy of GENERAL MOTORS CORP.

Callout

Component Name

Preliminary Procedures

1. Using a suitable tool, remove the brake fluid from the brake master cylinder reservoir.

2. Discard the brake fluid into an approved container.

CAUTION:

Refer to Brake Fluid Irritant Caution .

NOTE:

Refer to Brake Fluid Effects on Paint and Electrical Components Notice .

1

Master Cylinder Fluid Level Sensor Electrical Connector

2

Master Cylinder Reservoir
Procedure:
Carefully spread the 2 locking tabs and lift the master cylinder reservoir
upward.

Master Cylinder Reservoir Seals (Qty: 2)

2008 Chevrolet Silverado 1500

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

MASTER CYLINDER RESERVOIR REPLACEMENT (JH6, JH7)

Removal Procedure

3

Tip: Lubricate the seals and the outer surface area of the reservoir-to-housing
barrels with Delco Supreme 11®, GM P/N 12377967 (Canadian P/N 992667)
or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container.

CAUTION: Refer to Brake Fluid Irritant Caution .

NOTE:

Refer to Brake Fluid Effects on Paint and Electrical Components
Notice .

2008 Chevrolet Silverado 1500

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