spare wheel HUMMER H3 2007 Owners Manual

While driving on a surface with reduced traction,
try your best to avoid sudden steering, acceleration,
or braking, including reducing vehicle speed by
shifting to a lower gear. Any sudden changes could
cause the tires to slide. You may not realize the
surface is slippery until your vehicle is skidding.
Learn to recognize warning clues — such as
enough water, ice, or packed snow on the road to
make a mirrored surface — and slow down when
you have any doubt.
Remember: Any Anti-Lock Brake System (ABS)
helps avoid only the braking skid.
Off-Road Driving
This off-road guide is meant to provide advice
for when you drive your vehicle off paved roads.
Also, seeBraking on page 238.
Off-road driving can be great fun. But it does have
some denite hazards. The greatest of these is
the terrain itself.
“Off-roading” means you have left the great
North American road system behind. Traffic
lanes are not marked. Curves are not banked.There are no road signs. Surfaces can be slippery,
rough, uphill or downhill. In short, you have
gone right back to nature.
Off-road driving involves some new skills. And
that is why it is very important that you read
this guide. You will nd many driving tips and
suggestions. These will help make your off-road
driving safer and more enjoyable.
Before You Go Off-Roading
There are some things to do before you go out.
For example, be sure to have all necessary
maintenance and service work done. Check to
make sure all underbody shields are properly
attached. Make sure any equipment you
may need — rst aid kit, cell phone, ashlight,
etc. — is securely stored in the vehicle.
Be sure you read all the information about your
four-wheel-drive vehicle in this manual. Is
there enough fuel? Is the spare tire fully inated?
Are the uid levels up where they should be?
What are the local laws that apply to off-roading
where you will be driving? If you do not know, you
should check with law enforcement people in
the area. Will you be on someone’s private land?
If so, be sure to get the necessary permission.
250

Headlamp Aiming........................................ 358
Bulb Replacement....................................... 361
Halogen Bulbs........................................... 361
Headlamps................................................ 362
Taillamps, Turn Signal, Stoplamps
and Back-up Lamps............................... 363
License Plate Lamp................................... 364
Replacement Bulbs................................... 365
Windshield Wiper Blade Replacement....... 366
Tires............................................................ 367
Tire Sidewall Labeling............................... 368
Tire Terminology and Denitions............... 372
Ination - Tire Pressure............................. 375
Tire Pressure Monitor System................... 376Tire Inspection and Rotation...................... 381
When It Is Time for New Tires.................. 383
Buying New Tires...................................... 383
Different Size Tires and Wheels................ 385
Uniform Tire Quality Grading..................... 386
Wheel Alignment and Tire Balance............ 387
Wheel Replacement.................................. 387
Tire Chains............................................... 389
If a Tire Goes Flat.................................... 390
Changing a Flat Tire................................. 391
Removing the Spare Tire and Tools.......... 393
Removing the Flat Tire and Installing
the Spare Tire....................................... 396
Storing a Flat or Spare Tire and Tools...... 403
Spare Tire................................................. 405
Section 5 Service and Appearance Care
312

How to Check
Use a good quality pocket-type gage to check tire
pressure. You cannot tell if your tires are
properly inated simply by looking at them. Radial
tires may look properly inated even when they
are underinated. Check the tire’s ination
pressure when the tires are cold. Cold means your
vehicle has been sitting for at least three hours
or driven no more than 1 mile (1.6 km).
Remove the valve cap from the tire valve stem.
Press the tire gage rmly onto the valve to
get a pressure measurement. If the cold tire
ination pressure matches the recommended
pressure on the Tire and Loading Information
label, no further adjustment is necessary. If the
ination pressure is low, add air until you reach the
recommended amount.
If you overll the tire, release air by pushing on
the metal stem in the center of the tire valve.
Recheck the tire pressure with the tire gage.
Be sure to put the valve caps back on the valve
stems. They help prevent leaks by keeping out dirt
and moisture.
Tire Pressure Monitor System
Your vehicle has a Tire Pressure Monitor System
(TPMS). This system uses radio and sensor
technology to check tire pressure levels. TPMS
sensors are mounted onto each tire and wheel
assembly on your vehicle, including the spare tire.
The TPMS sensors monitor the air pressure in
your vehicle’s tires and transmit the tire pressure
readings to a receiver located in the vehicle.
When a low tire pressure condition is detected,
the TPMS will illuminate the low tire pressure
warning light located in the instrument panel
cluster, and at the same time display the LOW
TIRE warning message on the Driver Information
Center (DIC). The low tire pressure warning
light and the LOW TIRE warning message appear
at each ignition cycle until the tires are inated
to the correct ination pressure.
376

TPMS Sensor Identication Codes
Each TPMS sensor has a unique identication
code. Any time you replace one or more of
the TPMS sensors, install the spare tire onto your
vehicle, or rotate your vehicle’s tires, the
identication codes will need to be matched to the
new tire/wheel position. The sensors are
matched to the tire/wheel positions in the following
order: driver’s side front tire, passenger’s side
front tire, passenger’s side rear tire, and driver’s
side rear tire using a TPMS diagnostic tool.
See your dealer for service.
The TPMS sensors may also be matched to each
tire/wheel position by increasing or decreasing
the tire’s air pressure. If increasing the tire’s
air pressure, do not exceed the maximum ination
pressure indicated on the tire’s sidewall.
You will have one minute to match the rst
tire/wheel position, and ve minutes overall, to
match all four tire/wheel positions.If it takes longer than one minute, to match the
rst tire and wheel, or more than ve minutes
to match all four tire and wheel positions
the matching process stops and you will need to
start over.
The TPMS sensor matching procedure is
outlined below:
1. Set the parking brake.
2. Turn the ignition switch to ON with the
engine off.
3. Turn the exterior lamp switch from AUTO to
ON four times within three seconds. A double
horn chirp will sound and the TPMS low
tire warning light will begin to ash. The
double horn chirp and ashing TPMS warning
light indicates the TPMS matching process
has started. The TPMS warning light should
continue ashing throughout the matching
procedure. The SERV TPM message will be
displayed on the Driver Information
Center (DIC).
4. Start with the driver’s side front tire.
379

When you have a at tire, you will rst need to set
up the wheel blocks before changing it. They
are located in the tool bag, in the swing-gate. See
Removing the Spare Tire and Tools on page 393
for more information.
To use the wheel
blocks, lift the wheel
block as shown and lock
into place.Then, use the following as a guide to assist you in
the placement of the wheel blocks.
The following information will tell you next how to
use the jack and change a tire.
392

6. Open the tool bag and you will nd the
following tools, which you will use to remove
the spare tire and at tire:
A. Wheel Wrench
B. Jack Handle
ExtensionsC. Jack Handle
D. Jack
E. Wheel BlocksThe spare tire is attached to the outside of the
swing-gate. To remove the spare tire, do the
following:
1. If your vehicle has a spare tire cover
release the latch and open the cover.
Notice:Opening the endgate before
completely closing and latching the spare tire
cover may result in damage to your vehicle.
Close and latch the spare tire cover before
opening the endgate to avoid possible damage.
394

2. Remove the center
cap, if equipped, by
placing the at
end of the wheel
wrench in the slot
on the wheel
and gently pry the
center cap out.3. Use the wheel
wrench to remove
the wheel nuts
securing the
spare tire.
If your vehicle has locking lug nuts, the key is
supplied in the tool bag. Use the key along
with the wheel wrench to remove the
wheel nuts from the tire.
4. Pull off and gently lower the spare tire to the
ground. Set it next to the at tire.
In order to remove the spare tire, you may
need someone to assist you.
395

Removing the Flat Tire and
Installing the Spare Tire
1. Remove the center
cap by placing the
at end of the wheel
wrench in the slot
on the wheel
and gently pry the
center cap out.2. Turn the wheel
wrench
counterclockwise
to loosen the
wheel nuts.
Do not remove
them yet.
If your vehicle has locking lug nuts, the key is
supplied in the tool bag. Use the key along
with the wheel wrench to remove the
wheel nuts from the tire.
You will now need to jack up the vehicle using
the following instructions.
396

A. Front Position - Lower Control Arm
B. Rear Position - Lower Axle
3. Locate the vehicle’s jacking
positions (A and B).
4. Assemble the jack and tools as follows:Front Tire Flat:If the at tire is on a front tire
of the vehicle, you will need to use the jack
handle and both jack handle extensions. Attach
the wheel wrench to the jack handle
extensions. Attach the jack handle to the jack.
From the front of the vehicle position the
jack on the front lower control arm along the
bar that runs front to back. Turn the wheel
wrench clockwise to raise the vehicle. Raise
the vehicle far enough off the ground so
there is enough room for the spare tire to clear
the ground.
Jacking Locations (Overall View)
Front Position
397

Refer to the graphic above to locate the
placement of the jack if the at tire is on the
rear of the vehicle.
Rear Tire Flat:You will need to use the jack
handle and both jack handle extensions.
Attach the wheel wrench to the jack
extensions. Attach the jack handle to the jack.
From the rear of the vehicle align the jack
under the rear axle. Turn the wheel wrench
clockwise to raise the vehicle. Raise the
vehicle far enough off the ground so there is
enough room for the spare tire to clear
the ground.
Rear Positions
398