2008 HUMMER H3 wheel size

Adding Equipment to Your
Airbag-Equipped Vehicle
Q:Is there anything I might add to or change
about the vehicle that could keep the airbags
from working properly?
A:Yes. If you add things that change your vehicle’s
frame, bumper system, height, front end or side
sheet metal, they may keep the airbag system from
working properly. Changing or moving any parts of
the front seats, safety belts, the airbag sensing and
diagnostic module, steering wheel, instrument panel,
roof-rail airbag modules, ceiling headliner or pillar
garnish trim, overhead console, front sensors, side
impact sensors, rollover sensor module, or airbag
wiring can affect the operation of the airbag system.
In addition, your vehicle has a passenger sensing
system for the right front passenger’s position, which
includes sensors that are part of the passenger’s
seat. The passenger sensing system may not
operate properly if the original seat trim is replaced
with non-GM covers, upholstery or trim, or with GM
covers, upholstery or trim designed for a different
vehicle. Any object, such as an aftermarket seat
heater or a comfort enhancing pad or device,
installed under or on top of the seat fabric, couldalso interfere with the operation of the passenger
sensing system. This could either prevent proper
deployment of the passenger airbag(s) or prevent
the passenger sensing system from properly turning
off the passenger airbag(s). SeePassenger Sensing
System on page 1-62.
If you have any questions about this, you should
contact Customer Assistance before you modify
your vehicle. The phone numbers and addresses for
Customer Assistance are in Step Two of the
Customer Satisfaction Procedure in this manual.
SeeCustomer Satisfaction Procedure on page 7-2.
If your vehicle has rollover roof-rail airbags, see
Different Size Tires and Wheels on page 5-73
for additional important information.
Q:Because I have a disability, I have to get my
vehicle modied. How can I nd out whether
this will affect my airbag system?
A:If you have questions, call Customer Assistance.
The phone numbers and addresses for Customer
Assistance are in Step Two of the Customer
Satisfaction Procedure in this manual. See
Customer Satisfaction Procedure on page 7-2.
In addition, your dealer/retailer and the service manual
have information about the location of the airbag sensors,
sensing and diagnostic module and airbag wiring.
1-68

Tires..............................................................5-54
Tire Sidewall Labeling...................................5-55
Tire Terminology and Denitions.....................5-59
Ination - Tire Pressure.................................5-62
Tire Pressure Monitor System.........................5-63
Tire Pressure Monitor Operation.....................5-65
Tire Inspection and Rotation...........................5-68
When It Is Time for New Tires.......................5-70
Buying New Tires.........................................5-71
Different Size Tires and Wheels......................5-73
Uniform Tire Quality Grading..........................5-74
Wheel Alignment and Tire Balance..................5-75
Wheel Replacement......................................5-75
Tire Chains..................................................5-77
If a Tire Goes Flat........................................5-78
Changing a Flat Tire.....................................5-79
Removing the Spare Tire and Tools................5-81
Removing the Flat Tire and Installing the
Spare Tire................................................5-83
Storing a Flat or Spare Tire and Tools............5-89
Spare Tire...................................................5-91
Appearance Care............................................5-91
Interior Cleaning...........................................5-91
Fabric/Carpet...............................................5-93
Leather.......................................................5-93
Instrument Panel, Vinyl, and Other Plastic
Surfaces..................................................5-94Care of Safety Belts......................................5-94
Weatherstrips...............................................5-94
Washing Your Vehicle...................................5-95
Cleaning Exterior Lamps/Lenses.....................5-95
Finish Care..................................................5-96
Windshield, Backglass, and Wiper Blades.........5-97
Aluminum or Chrome-Plated Wheels and Trim . . .5-97
Tires...........................................................5-98
Sheet Metal Damage.....................................5-98
Finish Damage.............................................5-98
Underbody Maintenance................................5-98
Chemical Paint Spotting.................................5-99
Vehicle Care/Appearance Materials..................5-99
Vehicle Identication.....................................5-100
Vehicle Identication Number (VIN)................5-100
Service Parts Identication Label...................5-101
Electrical System..........................................5-101
Add-On Electrical Equipment.........................5-101
Windshield Wiper Fuses...............................5-101
Power Windows and Other Power Options......5-102
Fuses and Circuit Breakers..........................5-102
Engine Compartment Fuse Block...................5-103
Capacities and Specications........................5-107
Capacities and Specications........................5-107
Section 5 Service and Appearance Care
5-2

Tire Pressure Monitor Operation
The Tire Pressure Monitor System (TPMS) is designed
to warn the driver when a low tire pressure condition
exists. TPMS sensors are mounted onto each tire
and wheel assembly on your vehicle, excluding 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 illuminates the
low tire pressure warning
light located on the
instrument panel cluster.
At the same time, a Driver Information Center (DIC)
message is displayed on the DIC display screen. The
low tire pressure warning light and the DIC warning
message come on at each ignition cycle until the tires
are inated to the correct ination pressure.For additional information and details about the DIC
operation and displays seeDIC Operation and Displays
on page 3-40andDIC Warnings and Messages on
page 3-43.
The low tire pressure warning light may come on in cool
weather when the vehicle is rst started, and then
turn off as you start to drive. This could be an early
indicator that the air pressure in the tire(s) are getting
low and need to be inated to the proper pressure.
A Tire and Loading Information label, attached to your
vehicle, shows the size of your vehicle’s original
equipment tires and the correct ination pressure for
your vehicle’s tires when they are cold. SeeLoading
Your Vehicle on page 4-42, for an example of the Tire
and Loading Information label and its location on
your vehicle. Also seeInflation - Tire Pressure on
page 5-62.
Your vehicle’s TPMS can warn you about a low tire
pressure condition but it does not replace normal
tire maintenance. SeeTire Inspection and Rotation on
page 5-68andTires on page 5-54.
Notice:Liquid tire sealants could damage the Tire
Pressure Monitor System (TPMS) sensors. Sensor
damage caused by using a tire sealant is not
covered by your warranty. Do not use liquid tire
sealants.
5-65

Replacing less than a full set of tires can affect
the braking and handling performance of your
vehicle. SeeTire Inspection and Rotation
on page 5-68for information on proper tire
rotation.
{CAUTION:
Mixing tires could cause you to lose
control while driving. If you mix tires of
different sizes, brands, or types (radial
and bias-belted tires) the vehicle may not
handle properly, and you could have a
crash. Using tires of different sizes,
brands, or types may also cause damage
to your vehicle. Be sure to use the correct
size, brand, and type of tires on your
vehicle’s wheels.
{CAUTION:
If you use bias-ply tires on your vehicle,
the wheel rim anges could develop
cracks after many miles of driving. A tire
and/or wheel could fail suddenly, causing
a crash. Use only radial-ply tires with the
wheels on your vehicle.
If you must replace your vehicle’s tires with those
that do not have a TPC Spec number, make
sure they are the same size, load range, speed
rating, and construction type (radial and
bias-belted tires) as your vehicle’s original tires.
Vehicles equipped with a tire pressure monitoring
system may give an inaccurate low-pressure
warning if non-TPC spec rated tires are installed
on your vehicle. Non-TPC Spec rated tires
may give a low-pressure warning that is higher or
lower than the proper warning level you would
get with TPC Spec rated tires. SeeTire Pressure
Monitor System on page 5-63.
5-72

Your vehicle’s original equipment tires are listed
on the Tire and Loading Information Label.
SeeLoading Your Vehicle on page 4-42, for more
information about the Tire and Loading Information
Label and its location on your vehicle.
Different Size Tires and Wheels
If you add wheels or tires that are a different size than
your original equipment wheels and tires, this could
affect the way your vehicle performs, including its
braking, ride and handling characteristics, stability, and
resistance to rollover. Additionally, if your vehicle
has electronic systems such as anti-lock brakes, rollover
airbags, traction control, and electronic stability control,
the performance of these systems can be affected.
{CAUTION:
If you add different sized wheels, your vehicle
may not provide an acceptable level of
performance and safety if tires not
recommended for those wheels are selected.
You may increase the chance that you will
crash and suffer serious injury. Only use
GM specic wheel and tire systems developed
for your vehicle, and have them properly
installed by a GM certied technician.
SeeBuying New Tires on page 5-71andAccessories
and Modifications on page 5-3for additional information.
5-73

Tire Chains
{CAUTION:
If your vehicle has LT285/75R16 or P265/65R18
size tires, do not use tire chains. They can
damage your vehicle because there is not
enough clearance. Tire chains used on a
vehicle without the proper amount of clearance
can cause damage to the brakes, suspension,
or other vehicle parts. The area damaged by
the tire chains could cause you to lose control
of your vehicle and you or others may be
injured in a crash.
Use another type of traction device only if its
manufacturer recommends it for use on your
vehicle and tire size combination and road
conditions. Follow that manufacturer’s
CAUTION: (Continued)
CAUTION: (Continued)
instructions. To help avoid damage to your
vehicle, drive slowly, readjust, or remove the
device if it is contacting your vehicle, and do
not spin your vehicle’s wheels.
If you do nd traction devices that will t,
install them on the rear tires.
Notice:If your vehicle has a tire size other than
LT285/75R16 or P265/65R18 use tire chains only
where legal and only when you must. Use chains that
are the proper size for your tires. Install them on the
tires of the rear axle. Do not use chains on the tires of
the front axle. Tighten them as tightly as possible
with the ends securely fastened. Drive slowly and
follow the chain manufacturer’s instructions. If you
can hear the chains contacting your vehicle, stop and
retighten them. If the contact continues, slow down
until it stops. Driving too fast or spinning the wheels
with chains on will damage your vehicle.
5-77

Spare Tire
Your vehicle, when new, had a fully-inated spare tire.
A spare tire may lose air over time, so check its
ination pressure regularly. SeeInflation - Tire Pressure
on page 5-62andLoading Your Vehicle on page 4-42
for information regarding proper tire ination and loading
your vehicle. For instruction on how to remove, install
or store a spare tire, seeRemoving the Flat Tire
and Installing the Spare Tire on page 5-83andStoring
a Flat or Spare Tire and Tools on page 5-89.
After installing the spare tire on your vehicle, you should
stop as soon as possible and make sure the spare is
correctly inated. The spare tire is made to perform well
at speeds up to 70 mph (112 km/h) at the recommended
ination pressure, so you can nish your trip.
Have the damaged or at road tire repaired or replaced
as soon as you can and installed back onto your
vehicle. This way, a spare tire will be available in case
you need it again. Do not mix tires and wheels of
different sizes, because they will not t. Keep your spare
tire and its wheel together.
Appearance Care
Interior Cleaning
Your vehicle’s interior will continue to look its best if it is
cleaned often. Although not always visible, dust and
dirt can accumulate on your upholstery. Dirt can damage
carpet, fabric, leather, and plastic surfaces. Regular
vacuuming is recommended to remove particles
from your upholstery. It is important to keep your
upholstery from becoming and remaining heavily soiled.
Soils should be removed as quickly as possible. Your
vehicle’s interior may experience extremes of heat
that could cause stains to set rapidly.
Lighter colored interiors may require more frequent
cleaning. Use care because newspapers and garments
that transfer color to your home furnishings may also
transfer color to your vehicle’s interior.
5-91

Starting the Engine.........................................2-20
Steering.......................................................... 4-8
Steering Wheel, Tilt Wheel................................. 3-7
Storage Areas
Convenience Net.........................................2-59
Cupholder(s)...............................................2-56
Front Armrest Storage Area...........................2-57
Front Seat Storage Net................................2-57
Glove Box..................................................2-56
Luggage Carrier..........................................2-57
Rear Storage Area.......................................2-59
Stuck in Sand, Mud, Ice, or Snow.....................4-39
Sun Visors.....................................................2-13
Sunroof.........................................................2-60
Swing-gate.....................................................2-10
T
Tachometer....................................................3-27
Taillamps
Turn Signal, Stoplamps and Back-up Lamps....5-50
Theft-Deterrent, Radio.....................................3-61
Theft-Deterrent Systems...................................2-14
Content Theft-Deterrent................................2-14
PASS-Key
®III+...........................................2-16
PASS-Key®III+ Operation.............................2-16
Passlock®...................................................2-15Tilt Wheel........................................................ 3-7
Time, Setting..................................................3-48
Tire
Pressure Light.............................................3-35
Tires.............................................................5-54
Aluminum or Chrome-Plated Wheels,
Cleaning.................................................5-97
Buying New Tires........................................5-71
Chains.......................................................5-77
Changing a Flat Tire....................................5-79
Cleaning....................................................5-98
Different Size..............................................5-73
If a Tire Goes Flat.......................................5-78
Ination - Tire Pressure................................5-62
Inspection and Rotation................................5-68
Installing the Spare Tire................................5-83
Pressure Monitor Operation...........................5-65
Pressure Monitor System..............................5-63
Removing the Flat Tire.................................5-83
Removing the Spare Tire and Tools...............5-81
Spare Tire..................................................5-91
Storing a Flat or Spare Tire and Tools............5-89
Tire Sidewall Labeling..................................5-55
Tire Terminology and Denitions....................5-59
Uniform Tire Quality Grading.........................5-74
Wheel Alignment and Tire Balance.................5-75
Wheel Replacement.....................................5-75
When It Is Time for New Tires......................5-70
12