Chevrolet Silverado / GMC Sierra. Manual — part 2670

You will be directed by the appropriate Symptom Table to go to other brake system
diagnostic tables as appropriate.

1

Were you sent here from a Hydraulic Brake
Symptom Table?

Go to Step 4

Go to Step 2

2

Were you sent here from a Park Brake
Symptom Table?

Go to Step 4

Go to Step 3

3

Is the symptom related to the ability of the park
brake system to hold and/or release?

Go to Diagnostic
Starting Point -
Park Brake

Go to Diagnostic
Starting Point -
Hydraulic
Brakes

4

1. Raise and support the vehicle with the rear

axle supported by jack stands. Refer to
Lifting and Jacking the Vehicle .

2. Shift the transmission into NEUTRAL.

3. With the park brake RELEASED, attempt

to rotate the rear wheels to check the rear
brakes for a significant amount of drag.

Do the rear brakes have a significant amount of
drag?

Go to Step 9

Go to Step 5

5

1. Shift the transmission into NEUTRAL.

2. Apply the park brake.

3. Attempt to rotate the rear wheels to check

the rear brakes for a significant amount of
drag.

Do the rear brakes have a significant amount of
drag?

Go to Step 19

Go to Step 6

6

Visually check the park brake cable
connections and the cables that are accessible
on the UNDERSIDE of the vehicle for
disconnections and/or damage.
Were any or the park brake cables disconnected
and/or damaged?

Go to Step 7

Go to Step 8

Reconnect or replace the park brake cables as
necessary. Refer to the following procedures as
necessary:

2008 Chevrolet Silverado 1500

2008 BRAKES Park Brake - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

7

Parking Brake Lever Pedal Assembly
Replacement

(The front park brake cable and the park
brake pedal are replaced as an assembly.)

Parking Brake Intermediate Cable
Replacement (JD9, JF3, JF7)

Parking Brake Rear Cable
Replacement - Left Side (JF3, JF7) or
Parking Brake Rear Cable
Replacement - Left Side (JD9)

Parking Brake Rear Cable
Replacement - Right Side (JF3, JF7) or
Parking Brake Rear Cable
Replacement - Right Side (JD9)

Did you complete the repair and/or
replacement?

Go to Step 19

-

8

Check the adjustment of the park brake and
adjust as necessary. Refer to Park Brake
Adjustment (Drum Brake) or Park Brake
Adjustment (Disc Brake).
Did you find and correct the condition?

Go to Step 19

Go to Step 9

9

1. Remove the rear brake rotors. Refer to

Rear Brake Rotor Replacement (JD9)
or Rear Brake Rotor Replacement
(JH6) or Rear Brake Rotor
Replacement (JH7) .

2. Inspect the park brake shoe hardware for

looseness, damaged, broken or missing
components.

NOTE:

Do not depress the brake pedal with the brake
rotors and/or the brake drums removed, or with the
brake calipers repositioned away from the brake
rotors, or damage to the brake system may result.

2008 Chevrolet Silverado 1500

2008 BRAKES Park Brake - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

3. Check the park brake actuators for a

seized condition.

Does the park brake hardware and/or the park
brake actuators require replacement?

Go to Step 10

Go to Step 11

10

1. Replace park brake hardware components

as necessary. Refer to Parking Brake
Shoe Replacement (JD9) or Parking
Brake Shoe Replacement (JH6, JH7).

2. Replace the park brake actuators as

necessary. Refer to Parking Brake
Actuator Replacement (JD9).

Did you complete the replacement?

Go to Step 19

-

11

With the aid of an assistant, apply and release
the parking brake while observing the cables
for free movement.
Do the park brake cables move freely?

Go to Step 12

Go to Step 14

12

Check the adjustment of the park brake and
adjust as necessary. Refer to Park Brake
Adjustment (Drum Brake) or Park Brake
Adjustment (Disc Brake).
Did you find and correct the condition?

Go to Step 19

Go to Step 13

13

1. With the transmission still in NEUTRAL,

apply the park brake.

2. Attempt to rotate the rear wheels to check

the rear brakes for a significant amount of
drag.

3. Release the park brake.

4. Rotate the rear wheels to check the rear

brakes for a significant reduction of drag.

Did the park brake apply and release properly?

Go to Step 19

Go to Symptoms
- Park Brake

14

Disconnect the park brake cable connections
that are accessible on the UNDERSIDE of the
vehicle one at a time and check each cable for
free movement.

2008 Chevrolet Silverado 1500

2008 BRAKES Park Brake - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado