Hummer H2. Manual - part 793

Fig. 18: Removing/Installing Caliper Bracket Mounting Bolts (Front & Rear) 
Courtesy of GENERAL MOTORS CORP. 

Installation 

1. Install the brake caliper bracket. Perform the following procedure before installing the brake caliper 

bracket mounting bolts. 

z

Remove all traces of the original adhesive patch.  

z

Clean the threads of the bolt with denatured alcohol or equivalent and allow to dry.  

z

Apply Threadlocker (GM P/N 12345493). 

 

2004 Hummer H2 

2003-04 BRAKES Disc - Hummer

  

2. Install the caliper bracket mounting bolts. Tighten the brake caliper bracket mounting bolts to 

specification. See TORQUE SPECIFICATIONS . Install the anti-rattle clips to the brake caliper 
bracket. Install the brake pads to the brake caliper bracket.  

3. Slide the brake pads in until they contact the rotor. Install the brake caliper. See BRAKE CALIPER . 

Install the tire and wheel assembly. Lower the vehicle.  

4. With the engine OFF, gradually apply the brake pedal to approximately 2/3 of its travel distance. Slowly 

release the brake pedal. Wait 15 seconds, then repeat until a firm pedal is obtained. This will properly seat 
the brake caliper pistons and brake pads.  

Removal (Rear) 

1. Remove the caliper from the mounting bracket and support the caliper with heavy mechanic's wire or 

equivalent. See BRAKE CALIPER . DO NOT disconnect the hydraulic brake flexible hose from the 
caliper.  

2. Remove the brake pads. See BRAKE PADS . Remove the anti-rattle clips from the brake caliper bracket. 

Remove the brake caliper bracket mounting bolts. See Fig. 18 . Remove the brake caliper bracket.  

3. Remove any contaminants or foreign material from the inside ends of the brake caliper bracket. Clean the 

mounting surface and threads of the brake caliper bracket.  

Installation 

1. Install the brake caliper bracket. Perform the following procedure before installing the brake caliper 

bracket mounting bolts. 

z

Remove all traces of the original adhesive patch.  

z

Clean the threads of the bolt with denatured alcohol or equivalent and allow to dry.  

z

Apply Threadlocker (GM P/N 12345493).  

2. Install the caliper bracket mounting bolts. Tighten to specification. See TORQUE SPECIFICATIONS . 

Install the anti-rattle clips to the brake caliper bracket. Install the brake pads to the brake caliper bracket.  

3. Slide the brake pads in until they contact the rotor. Install the brake caliper. See BRAKE CALIPER . 

Install the tire and wheel assembly. Lower the vehicle.  

4. With the engine OFF, gradually apply the brake pedal to approximately 2/3 of its travel distance. Slowly 

release the brake pedal. Wait 15 seconds, then repeat until a firm pedal is obtained. This will properly seat 
the brake caliper pistons and brake pads.  

BRAKE HOSE 

Removal (Front) 

1. Raise and support the vehicle. Remove the tire and wheel assembly. Clean all dirt and foreign material 

from the brake hose end and brake pipe fitting. See Fig. 19 .  

2. Install a rubber cap or plug to the exposed brake pipe fitting end in order to prevent brake fluid loss and 

contamination. Use a backup wrench on the brake hose fitting end, disconnect the brake pipe fitting end 
from the brake hose, then cap or plug the brake pipe fitting end. Remove the brake hose retaining clip 
from the brake hose mounting bracket. 

 

2004 Hummer H2 

2003-04 BRAKES Disc - Hummer

  

3. Remove the brake hose bracket bolt from the upper control arm. See Fig. 20 . Remove the brake hose 

bracket bolt from the steering knuckle.  

4. Remove the brake hose to caliper bolt from the brake caliper. See Fig. 15 . Remove and discard the 2 

copper brake hose gaskets. These gaskets may be stuck to the brake caliper housing or the brake hose end. 

Fig. 19: Disconnecting/Connecting Brake Pipe Fitting End (Front) 
Courtesy of GENERAL MOTORS CORP.

 

2004 Hummer H2 

2003-04 BRAKES Disc - Hummer

  

Fig. 20: Removing/Installing Brake Hose Bracket Bolts (Upper Control Arm & Steering Knuckle - Front)
Courtesy of GENERAL MOTORS CORP. 

Installation 

1. Install 2 NEW copper brake hose gaskets. Assemble the 2 NEW copper brake hose gaskets and the brake 

hose bolt to the brake hose. Install the brake hose to caliper bolt and 2 NEW washers to the brake caliper. 
Tighten the bolt to specification. See TORQUE SPECIFICATIONS .  

2.  

Install the brake hose bracket bolt and the bracket to the steering knuckle. See Fig. 20 . Tighten the bolt to 
specification. Install the brake hose bracket bolt and the bracket to the upper control arm. Tighten the bolt 
to specification.  

3. Install the brake hose into the brake hose bracket. See Fig. 19 . Install the brake hose retaining clip. 

CAUTION: The brake hose must not be twisted. Make sure the brake hose is not 

in contact with any suspension component. 

 

2004 Hummer H2 

2003-04 BRAKES Disc - Hummer