tire size HUMMER H3 2009 User Guide

Tire Pressure Monitor
Operation
This vehicle may have a Tire
Pressure Monitor System (TPMS).
The 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 the vehicle,
excluding the spare tire. The TPMS
sensors monitor the air pressure
in the 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 3-34andDIC
Warnings and Messages on
page 3-37.
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 the vehicle, shows
the size of the vehicle’s original
equipment tires and the correct
ination pressure for the vehicle’s
tires when they are cold. See
Loading the Vehicle on page 4-35,
for an example of the Tire and
Loading Information label and its
location on the vehicle. Also see
Inflation - Tire Pressure on
page 5-51.
The 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 5-57andTires on page 5-44.
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.
5-54 Service and Appearance Care

You need new tires if any of the
following statements are true:
You can see the indicators at
three or more places around
the tire.
You can see cord or fabric
showing through the tire’s rubber.
The tread or sidewall is cracked,
cut, or snagged deep enough to
show cord or fabric.
The tire has a bump, bulge,
or split.
The tire has a puncture, cut, or
other damage that cannot be
repaired well because of the size
or location of the damage.The rubber in tires degrades over
time, even if they are not being
used. This is also true for the spare
tire, if the vehicle has one. Multiple
conditions affect how fast this
aging takes place, including
temperatures, loading conditions,
and ination pressure maintenance.
With proper care and maintenance
tires typically wear out before
they degrade due to age. If you are
unsure about the need to replace
the tires as they get older, consult
the tire manufacturer for more
information.
Buying New Tires
GM has developed and matched
specic tires for your vehicle.
The original equipment tires
installed on your vehicle,
when it was new, were designed
to meet General Motors
Tire Performance Criteria
Specication (TPC spec) system
rating. If you need replacement
tires, GM strongly recommends
that you get tires with the
same TPC Spec rating. This
way, your vehicle will continue to
have tires that are designed to
give the same performance
and vehicle safety, during normal
use, as the original tires.
Service and Appearance Care 5-59

GM’s exclusive TPC Spec
system considers over a dozen
critical specications that
impact the overall performance
of your vehicle, including brake
system performance, ride
and handling, traction control,
and tire pressure monitoring
performance. GM’s TPC
Spec number is molded onto
the tire’s sidewall near the
tire size. If the tires have an
all-season tread design, the TPC
spec number will be followed
by a MS, for mud and snow.
SeeTire Sidewall Labeling
on page 5-45for additional
information.
GM recommends replacing tires
in sets of four. This is because
uniform tread depth on all
tires will help keep your vehicle
performing most like it did
when the tires were new.Replacing less than a full set of
tires can affect the braking and
handling performance of your
vehicle. SeeTire Inspection
and Rotation on page 5-57
for 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 the
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 the 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.
5-60 Service and Appearance Care

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 5-52.
Your vehicle’s original equipment
tires are listed on the Tire and
Loading Information Label.
SeeLoading the Vehicle
on page 4-35, 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 5-59
andAccessories and Modifications
on page 5-3for additional
information.
Service and Appearance Care 5-61

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.
(Continued)
CAUTION (Continued)
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 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.
Service and Appearance Care 5-65

To store the jack tool bag and jack:
1. Return the tools to the jack
tool bag.
2. Secure the tool bag to the jack
by securely wrapping the straps
around the jack. Then, slide
the straps through the rings on
the bag and secure.
3. Reinstall the wing nut retainer to
fasten the jack and tool bag
under the rear seat.
Make sure that the wing nut
passes through the tool bag and
the jack before tightening it.
4. Turn the wing nut retainer
clockwise to secure.Spare Tire
The 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 5-51andLoading the Vehicle
on page 4-35for 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 5-72andStoring a Flat or
Spare Tire and Tools (H3) on
page 5-78orStoring a Flat or Spare
Tire and Tools (H3T) on page 5-80.
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 does not have a Tire
Pressure Monitor System sensor.
You may get a low pressure warning
light. SeeTire Pressure Monitor
Operation on page 5-54. Have the
damaged or at road tire repaired or
replaced as soon as you can.
Do not mix tires and wheels of
different sizes, because they will not
t. Keep your spare tire and its
wheel together.
5-82 Service and Appearance Care

Starting the Engine..............2-17
Steering..............................4-10
Steering Wheel, Tilt Wheel...... 3-6
Storage Areas
Cargo Management
System........................2-49
Center Console
Storage Area................2-47
Convenience Net..............2-49
Cupholders......................2-47
Front Seat Storage Net.....2-47
Glove Box.......................2-47
Luggage Carrier...............2-48
Rear Storage Area............2-49
Stuck in Sand, Mud, Ice,
or Snow..........................4-33
Sun Visors..........................2-11
Sunroof..............................2-50
Swing-gate........................... 2-9
T
Tachometer.........................3-24
Tailgate................................ 2-7
Taillamps
Turn Signal, Stoplamps and
Back-up Lamps.............5-42Taillamps (cont.)
Theft-Deterrent, Radio...........3-62
Theft-Deterrent Systems........2-11
Content Theft-Deterrent.....2-11
PASS-Key
®III+ Electronic
Immobilizer...................2-13
PASS-Key
®III+ Electronic
Immobilizer Operation....2-14
Passlock
®........................2-12
Tilt Wheel............................. 3-6
Time, Setting.......................3-41
Tire
Pressure Light..................3-30
Tires..................................5-44
Aluminum or
Chrome-Plated Wheels,
Cleaning......................5-88
Buying New Tires.............5-59
Chains............................5-65
Changing a Flat Tire.........5-66
Cleaning..........................5-89
Different Size...................5-61
If a Tire Goes Flat............5-66
Ination - Tire Pressure.....5-51
Inspection and Rotation.....5-57
Installing the Spare Tire.....5-72Tires (cont.)
Pressure Monitor
Operation.....................5-54
Pressure Monitor System . . . 5-52
Removing the Flat Tire......5-72
Removing the Spare Tire
and Tools.............5-68, 5-69
Secondary Latch System . . . 5-76
Spare Tire.......................5-82
Storing a Flat or Spare Tire
and Tools.............5-78, 5-80
Tire Sidewall Labeling.......5-45
Tire Terminology and
Denitions....................5-48
Uniform Tire Quality
Grading.......................5-62
Wheel Alignment and Tire
Balance.......................5-63
Wheel Replacement..........5-64
When It Is Time for New
Tires............................5-58
Towing
Recreational Vehicle..........4-40
Towing a Trailer................4-42
Your Vehicle.....................4-40
i-10 INDEX

Traction
Control System (TCS)......... 4-7
StabiliTrak
®System............ 4-6
Trailer
Recommendations............4-53
Transmission
Fluid, Automatic................5-18
Fluid, Manual...................5-20
Up-Shift Light...................3-27
Transmission Operation,
Automatic........................2-19
Transmission Operation,
Manual............................2-22
Trip Odometer.....................3-24
Truck-Camper Loading
Information......................4-39
Turn and Lane-Change
Signals............................. 3-6
Turn Signal/Multifunction
Lever................................ 3-6
U
Uniform Tire Quality
Grading...........................5-62
Universal Home Remote
System...........................2-42
Operation........................2-43
Up-Shift Light......................3-27
V
Vehicle
Control............................. 4-3
Loading...........................4-35
Parking Your....................2-31
Running While Parked.......2-32
Symbols.............................. iii
Vehicle Data Recording and
Privacy............................7-16
Vehicle Identication
Number (VIN)...................5-90
Service Parts Identication
Label...........................5-90
Ventilation Adjustment...........3-21
Visors.................................2-11
W
Warning Lights, Gages, and
Indicators........................3-22
Warnings
DIC Warnings and
Messages....................3-37
Hazard Warning Flashers.... 3-5
Safety and Symbols.............. iii
Wheels
Alignment and Tire
Balance.......................5-63
Different Size...................5-61
Replacement....................5-64
Where to Put the Restraint....1-32
Windows.............................. 2-9
Power .............................2-10
Windshield
Backglass, and Wiper
Blades, Cleaning...........5-87
Washer............................. 3-8
Washer Fluid....................5-30
INDEX i-11