Hummer H2. Manual - part 840

DISABLING THE PARK BRAKE CABLE AUTOMATIC ADJUSTER

Before any components of the parking brake system are serviced, the following procedure must be followed. 
Two technicians are required to perform this procedure: one inside the vehicle and one outside the vehicle. 

Fig. 48: Park Brake Cable Automatic Adjuster 
Courtesy of GENERAL MOTORS CORP.

 

2004 Hummer H2 

2004 BRAKES Park Brake - Hummer H2

  

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

2. Hold the pedal in the FULL upward position.  

3. Pull rearward on the front park brake cable until the pedal drum (2) reaches its full reset position.  

4. Insert a scribe or the shaft of a thin screwdriver (1) on an upward angle through the hole in the front of the 

pedal assembly, past the retracted pedal drum, and into the hole in the back of the pedal assembly (3).  

5. Slowly release the cable.  

6. Remove the component that requires service.  

ENABLING THE PARK BRAKE CABLE AUTOMATIC ADJUSTER 

If the park brake automatic adjuster has been disabled, the following two person procedure must be performed. 

1. Hold the park brake pedal in the FULL upward position. 

 

2004 Hummer H2 

2004 BRAKES Park Brake - Hummer H2

  

Fig. 49: Park Brake Cable Automatic Adjuster 
Courtesy of GENERAL MOTORS CORP. 

2. Pull rearward on the front park brake cable until the tension is released from the scribe or nail (1) 

installed through the holes in the pedal assembly.  

3. Remove the scribe or screwdriver (1).  

4. Slowly release the park brake cable until it returns to its original position. 

 

2004 Hummer H2 

2004 BRAKES Park Brake - Hummer H2

  

5. Release the park brake pedal.  

6. Lower the vehicle.  

7. Apply and release the park brake pedal to ensure that there is no binding or sticking.  

PARK BRAKE ACTUATOR REPLACEMENT 

Removal Procedure 

1. Disable the park brake cable automatic adjuster. Refer to Disabling the Park Brake Cable Automatic 

Adjuster  

2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.  

3. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and 

Wheels.  

4. Remove the rotor. Refer to Brake Rotor Replacement - Rear in Disc Brakes.  

5. Remove the axle shaft. Refer to Rear Axle Shaft Replacement in Rear Drive Axle.  

6. Remove the park brake shoe. Refer to Park Brake Shoe Replacement . 

CAUTION: Refer to Brake Dust Caution in Cautions and Notices.

 

2004 Hummer H2 

2004 BRAKES Park Brake - Hummer H2