Hummer H1 (2006+). Manual — part 412
13-22
Accessories
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Trailer Towing
Figure 13-32: Trailer Wiring Connector and Dummy Plug Location
Trailer Jumper Harness
HUMMER H1 vehicles come from the factory equipped for easy installation of the trailer jumper harness. The trailer jumper har-
ness may be installed as part of the factory trailer towing package or an add-on kit. Body wiring harnesses are designed with a
trailer wiring connector at the rear of the vehicle body above the rear bumper (Figure 13-32). Rear bumpers are manufactured with
a cut-out for the trailer harness receptacle.
Installation
1.
Insert the trailer jumper harness through the rear bumper cutout and bolt the receptacle in place (Figure 13-33).
2.
Remove the dummy plug and plug the trailer jumper harness connector into the trailer wiring connector.
Trailer Brake Controller
Spare wires have been provided in the body harness and routed from the instrument panel/fuse box area to the trailer connector at
the rear of the vehicle. Install the trailer brake controller using the manufacturer’s instructions.
The following information about the HUMMER H1 electrical system is necessary for installation:
1.
Three shrink-wrapped wire leads can be found under the instrument panel (Figure 13-34), they are:
Yellow—power
Red—stop light signal
Dark blue—trailer brake
FRONT OF VEHICLE
TRAILER WIRING
REAR OF VEHICLE BODY
ABOVE REAR BUMPER
DUMMY PLUG
CONNECTOR
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Accessories 13-23
5745804
Figure 13-33: Trailer Jumper Harness Mounting
2.
The trailer brake circuit will not have power until a fuse (of required amperage) is installed in the fuse block position 7H—the
far upper right hand corner of the fuse block.
Figure 13-34: Trailer Brake Controller Wiring
TRAILER HITCH REPLACEMENT
Removal
1.
Remove the locknuts, washers, receiver assembly mounting blocks, bolts, and the washers from the body mount bracket (Fig-
ure 13-35).
2.
Remove the bolts, lockwashers, washers from the lower brace weld nuts. Remove the brace from the bumper and the trailer
hitch mounting brackets.
3.
Remove the bolts, washers, and the trailer hitch from the rear bumper weld nuts.
Installation
1.
Position the trailer hitch receiver on the rear bumper and secure with the weld nuts, bolts and the washers (Figure 13-35). Do
BODY WIRING HARNESS
TRAILER JUMPER HARNESS
RECEPTACLE
REAR BUMPER
TRAILER
WIRING
CONNECTOR
GASKET
STEERING COLUMN
RED/STOP LIGHT
YELLOW/
POWER
DARK BLUE/
TRAILER BRAKE
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13-24
Accessories
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not tighten at this time.
2.
Secure the trailer hitch to the body mount bracket with the locknuts, washers, receiver assembly mounting blocks, bolts, and
the washers.
3.
Install the lower brace to the bumper and the trailer hitch mounting bracket with the bolts, lockwashers, washers and the weld
nuts.
4.
Tighten all the locknuts to 90 lb-ft (122 N•m).
Figure 13-35: Trailer Hitch
SIDE STEP BARS (TUBULAR)
Figure 13-36: Side Step Bar Installation
NOTE: This procedure covers the left side of the vehicle. The procedure for the right side is the same.
REAR BUMPER
TRAILER
HITCH
WELD NUT
RECEIVER
TRAILER HITCH
MOUNTING BRACKET
LOWER
BOLT
LOCKWASHER
WASHER
BRACE
RECEIVER ASSEMBLY
MOUNTING BLOCK
BODY
MOUNT
BRACKET
SIDE BRACKET
9-S13-001
STEP
BAR
TUBE
BRACKET
SUPPORT
BRACKET
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Accessories 13-25
5745804
Removal
1.
Remove the four bolts securing the tube brackets to the support brackets (See Figure 13-36).
2.
Swing the step bar and the angle bracket assembly down, disengage the tube brackets from the support brackets and remove
the assembly.
3.
Remove the four bolts securing the step bar to the tube bracket and slide the step bar and the end cap out of the tube bracket.
4.
Remove the two support bracket mounting nuts bolts and the washers in the rear wheel well.
5.
Remove the two bolts and the washers going through the rear support bracket into the rocker panel protection floor area and
remove the support bracket.
6.
Remove the two support bracket mounting nuts bolts and washers in the front wheel well.
7.
Remove the two bolts and the washers going through the front support bracket into the rocker panel protection floor area and
remove the support bracket.
Installation
1.
Install the front and rear support brackets on the rocker panel protection with the bolts, washers and the nuts (See Figure
13-36).
2.
Slide the tube brackets onto the bar in their respective positions (angled bracket to the rear).
3.
Place the bar end caps on the ends of the bar and install the bolts, washers and the lockwashers through the tube brackets into
the bar. Do not tighten at this time.
4.
Hang the bar assembly on the tabs of the support brackets, swing the bar up and secure the tube brackets to the support
brackets with the bolts, washers, lockwashers and the nuts.
5.
Tighten the remaining hardware now.
ROOF RACK
Removal
WARNING: Roof rack is extremely heavy. Several people may be required to remove and install rack safely. Use
care in determining ability to lift the rack. Failure to do so may result in injury.
1.
Remove the two mounting bolts and adjusting the nut on each “L” bracket (Figure 13-37).
2.
Remove the “L” brackets.
3.
Remove the rack from the vehicle.
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