Hummer H2. Manual — part 810
a significant amount of drag.
Do the rear brakes have a significant amount of drag?
Go to Step 11
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 6
Go to Step 7
6
1. Release the park brake.
2. Rotate the rear wheels to check the rear brakes for
a significant reduction in the amount of drag.
Did the rear brakes exhibit a significant reduction in the
amount of drag?
Go to Step 22
Go to Step 11
7
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 8
Go to Step 9
8
Reconnect or replace the park brake cables as necessary.
Refer to the following procedures as necessary:
z
Park Brake Cable Replacement - Front
z
Park Brake Cable Replacement - Left Rear
z
Park Brake Cable Replacement - Right Rear
Did you complete the repair and/or replacement?
Go to Step 9
-
9
Check the adjustment of the park brake. Refer to Park
Brake Adjustment .
Was the park brake adjusted properly?
Go to Step 11
Go to Step 10
10
Adjust the park brake. Refer to Park Brake
Adjustment .
Were you able to attain adjustment of the park brake?
Go to Step 16
Go to Step 11
11
1. Remove the rear brake rotors. Refer to Brake
Rotor Replacement - Rear in Disc Brakes.
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.
2004 Hummer H2
2004 BRAKES Park Brake - Hummer H2
2. Inspect the park brake shoe hardware for
looseness, damaged, broken or missing
components.
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 12
Go to Step 13
12
1. Replace park brake hardware components as
necessary. Refer to Park Brake Shoe
Replacement .
2. Replace the park brake actuators as necessary.
Refer to Park Brake Actuator Replacement .
Did you complete the replacement?
Go to Step 13
-
13
Have an assistant apply and release the park brake,
while you observe the park brake cables for free
movement.
Did the park brake cables move freely?
Go to Step 14
Go to Step 17
14
Check the adjustment of the park brake. Refer to Park
Brake Adjustment .
Was the park brake adjusted properly?
Go to Step 16
Go to Step 15
15
Adjust the park brake. Refer to Park Brake
Adjustment .
Were you able to attain adjustment of the park brake?
Go to Step 16
Go to Step 25
16
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 27
Return to Symptom
Table
17
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.
Do any of the park brake cables accessible on the
underside of the vehicle require replacement?
Go to Step 18
Go to Step 19
Replace any of the park brake cables that do not have
free movement and/or are not releasing properly. Refer
to the following procedures as necessary:
z
Park Brake Cable Replacement - Front
2004 Hummer H2
2004 BRAKES Park Brake - Hummer H2
18
z
Park Brake Cable Replacement - Left Rear
z
Park Brake Cable Replacement - Right Rear
Did you complete the replacement?
Go to Step 19
-
19
1. Disconnect the front park brake cable connection
accessible INSIDE the vehicle at the park brake
pedal assembly and check for free movement.
2. Replace the front park brake cable if it does not
have free movement. Refer to Park Brake Cable
Replacement - Front .
Did you find and correct a condition?
Go to Step 25
Go to Step 20
20
1. Disconnect the park brake release handle
assembly cable connection from the park brake
pedal assembly and check for free movement.
2. Replace the park brake release handle assembly if
the release cable does not have free movement.
Refer to Park Brake Release Handle Assembly
Replacement .
Did you find and correct a condition?
Go to Step 25
Go to Step 21
21
Replace the park brake pedal assembly that is not
releasing properly. Refer to Park Brake Pedal
Assembly Replacement .
Did you complete the replacement?
Go to Step 25
-
22
Check the adjustment of the park brake. Refer to Park
Brake Adjustment .
Is the park brake adjusted properly?
Go to Step 27
Go to Step 23
23
Adjust the park brake. Refer to Park Brake
Adjustment .
Were you able to attain adjustment of the park brake
system?
Go to Step 26
Go to Step 24
24
1. Remove the rear brake rotors, if they have not yet
been removed. Refer to Brake Rotor
Replacement - Rear in Disc Brakes.
2. Check the park brake actuators for a seized
condition.
3. Replace the park brake actuators as necessary.
Refer to Park Brake Actuator Replacement .
Did you find and correct a condition?
Go to Step 25
Return to Symptom
Table
Adjust the park brake. Refer to Park Brake
2004 Hummer H2
2004 BRAKES Park Brake - Hummer H2
PARK BRAKE SHOE INSPECTION
1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
2. Remove the tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
3. Remove the rear brake caliper bracket with the rear brake caliper. Refer to Brake Caliper Bracket
Replacement - Rear in Disc Brakes.
4. Remove the rear brake rotor. Refer to Brake Rotor Replacement - Rear in Disc Brakes.
or
5. Inspect and replace the park brake shoe and lining if any of the following conditions are found:
z
Excessive wear indicated by the park brake lining being worn down to the shoe
z
Brake lining cracking
z
Oil or fluid contamination of the brake lining
6. Adjust the park brake shoe. Refer to Park Brake Adjustment in Park Brake.
7. Install the rear brake rotor. Refer to Brake Rotor Replacement - Rear in Disc Brakes.
8. Install the rear brake caliper with the rear brake caliper bracket. Refer to Brake Caliper Bracket
Replacement - Rear in Disc Brakes.
9. Install the tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
10. Lower the vehicle.
25
Adjustment .
Were you able to attain adjustment of the park brake
system?
Go to Step 26
Return to Symptom
Table
26
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 27
Return to Symptom
Table
27
Install or connect any components that were removed or
disconnected during diagnosis.
Did you complete the operation?
Park Brake
System OK
Return to
Symptom Table
-
CAUTION: Refer to Brake Dust Caution in Cautions and Notices.
2004 Hummer H2
2004 BRAKES Park Brake - Hummer H2
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