2007 HUMMER H2 rear wheel lock

Locking Rear Axle
The locking rear axle can give your vehicle
additional traction from the rear wheels when
traveling in off-road situations such as mud, snow,
sand, steep hills and uneven terrain.
The button used to turn
this feature on or off is
located above the
transfer case buttons
to the right of the
steering wheel.
To lock the rear axle, do the following:
1. Place the transfer case in the Four-Wheel-Low
Lock mode. This is the only mode which will
allow the rear axle to lock. SeeFull-Time
Four-Wheel Drive on page 128for more
information regarding the transfer case and
Four-Wheel-Low-Lock mode.
2. Press the button with the vehicle stopped or
moving less than 2 mph (3 km/h).You must wait for the light in the button to stop
ashing and remain illuminated before the
rear axle is locked.
Notice:If you try to lock the rear axle while
your vehicle is stuck and the tires are spinning,
you could damage your vehicle’s drivetrain.
The repairs would not be covered by your
warranty. Always lock the rear axle before
attempting situations and/or navigating terrain
which could possibly cause the vehicle to
become stuck.
The locking rear axle will be disengaged when the
vehicle’s speed is greater than 20 mph (32 km/h), if
the vehicle’s battery is low and/or the transfer case
is shifted out of Four-Wheel-Low-Lock mode.
Notice:If you lock the rear axle while driving
on pavement, you could damage your
vehicle’s drivetrain. The repairs would not be
covered by your warranty. Do not use the
locking rear axle on pavement. If you need
four-wheel drive when traveling on pavement,
use only 4HI.
311

Never use the front mounted receiver to tow
a trailer.
You can use the front mounted receiver to tow
your vehicle behind another. SeeRecreational
Vehicle Towing on page 369.
Power Winch Platform
You can use the power winch platform
(if equipped) with an aftermarket winch.
Connect the winch to the platform and wiring to
the vehicle following the winch manufacturer’s
guidelines.
Notice:Do not use the winch platform to
winch at a tension of more than 9,000 lbs.
(4 082 kg). This would damage your vehicle’s
frame. This damage would not be covered
by your vehicle’s warranty.If you are using a winch to pull out another
vehicle, follow the winch manufacturer’s guidelines
and observe the following to prevent damage to
your vehicle:
If possible, have your vehicle anchored from
the opposite side of the winch to a solid,
immovable object.
If winching from the front, use both of the rear
recovery loops. If winching from the rear,
use both of the front recovery loops.
Put your transmission in NEUTRAL (N).
Use your regular brakes to hold your vehicle
in place and block the wheels to keep the
vehicle from moving.
Notice:Using a power winch with the
transmission in gear to pull out another vehicle
may damage the transmission. When operating
a power winch, always leave the transmission
in NEUTRAL (N).
361

{CAUTION:
Changing a tire can be dangerous.
The vehicle can slip off the jack and roll
over or fall on you or other people. You and
they could be badly injured or even killed.
Find a level place to change your tire.
To help prevent the vehicle from moving:
1. Set the parking brake rmly.
2. Put the shift lever in PARK (P).
3. Be sure the transfer case is in a
drive gear—not in NEUTRAL.
4. Turn off the engine and do not restart
while the vehicle is raised.
5. Do not allow passengers to remain in
the vehicle.
To be even more certain the vehicle will not
move, you can put blocks at the front and
rear of the tire farthest away from the one
being changed. That would be the tire on
the other side, at the opposite end of the
vehicle.When you have a at tire, use the following
example as a guide to assist you in the placement
of wheel blocks.
The following steps will tell you next how to use
the jack and change a tire.
469

3. Open the tool bag. You will nd the following
tools needed to remove the spare tire and
at tire:
A. Jack Handle
B. Jack Handle
Extensions (2)
C. Wheel WrenchD. Wheel Wrench
Extension
E. Wheel BlocksTo access the jack, rst remove the tonneau cover
on the rear cargo compartment. SeeTonneau
Cover (SUT) on page 167for more information.
To remove the cover, unlock it and then pull
the cover off.
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4. Assemble the jack and tools as follows:
Front Flat Tire:Attach the jack handle with
the hook end connected to the hole on
the jack. Slide the wheel wrench onto the jack
handle extension.Rear Flat Tire:Assemble the jack together
with the jack handle and the jack handle
extensions.
5. Turn the wheel wrench clockwise to raise the
jack head to the lifting point.
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4. Push and pull on the jack and retighten if
necessary to make sure the jack is secure.
5. Place the wheel blocks in the tool bag.
6. Place the remaining tools in the tool bag.
7. Make sure nothing is located under or
in front of the seat and then lift the rear
driver’s seat so that the oor is exposed.
See60/40 Split Bench Seat on page 15for
more information.
8. Place the narrow end of the tool bag under
the seat rails as shown and slide the tool
bag under the rear seat.
Be careful not to pinch the seat cables or
electrical harnesses.
9. Reinstall the strap to the seat rail for the tool
bag. Wrap the strap around the seat rail and
then secure it to the tool bag.
10. Return the seat to the correct position. See
60/40 Split Bench Seat on page 15for more
information.
487

4. Push and pull on the jack and retighten if
necessary to make sure the jack is secure.
5. Place the wheel blocks in the tool bag.
6. Place the remaining tools in the tool bag.
7. Make sure nothing is located under or
in front of the seat and then lift the rear
driver’s seat so that the oor is exposed.
See60/40 Split Bench Seat on page 15for
more information.
8. Place the narrow end of the tool bag under
the seat rails as shown. Slide the tool bag
under the rear seat.
Be careful not to pinch the seat cables or
electrical harnesses.
9. Reinstall the strap to the seat rail.
10. Return the seat to the correct position.
490

Fuses Usage
RR Wiper Rear Window Wiper Switch
SEO ACCYSpecial Equipment Option
Accessory
WS WPR Windshield Wipers
TBC ACCYTruck Body Controller
Accessory
IGN 3 Rear Heated Seats Module
Fuses Usage
4WDFour-Wheel Drive Switch, Air
Suspension Switch/Module
HTR A/C Not Used
LOCKPower Door Lock Relay
(Lock Function)
HVAC 1Inside Rearview Mirror,
Climate Control System
L DOORDriver’s Door Harness
Connection
CRUISE Cruise Control
UNLOCKPower Door Lock Relay
(Unlock Function)
RR FOG LP Not Used
BRAKE Brake Switch
DRIVER UNLOCKPower Door Lock Relay
(Driver’s Door Unlock
Function)
IGN 0Brake Transmission Shift
Interlock, Powertrain Control
Module, Transmission
TBC IGN 0 Truck Body Controller
VEH CHMSLVehicle and Trailer High
Mounted Stoplamp
LT TRLR ST/TRN Left Turn Signal/Stop Trailer
505