2007 HUMMER H3 tires

Include an ice scraper, a small brush or broom,
a supply of windshield washer uid, a rag,
some winter outer clothing, a small shovel, a
ashlight, a red cloth, and a couple of reective
warning triangles. And, if you will be driving under
severe conditions, include a small bag of sand,
a piece of old carpet, or a couple of burlap bags
to help provide traction. Be sure you properly
secure these items in your vehicle.
Driving on Snow or Ice
Most of the time, those places where the tires
meet the road probably have good traction.
However, if there is snow or ice between the
tires and the road, you can have a very slippery
situation. You will have a lot less traction, or
grip, and will need to be very careful.What is the worst time for this? Wet ice. Very cold
snow or ice can be slick and hard to drive on.
But wet ice can be even more trouble because it
may offer the least traction of all. You can get
wet ice when it is about freezing, 32°F (0°C), and
freezing rain begins to fall. Try to avoid driving
on wet ice until salt and sand crews can get there.
282

If Your Vehicle is Stuck in Sand,
Mud, Ice, or Snow
In order to free your vehicle when it is stuck,
you will need to spin the wheels, but you do not
want to spin your wheels too fast. The method
known as rocking can help you get out when you
are stuck, but you must use caution.
{CAUTION:
If you let your vehicle’s tires spin at high
speed, they can explode, and you or others
could be injured. And, the transmission or
other parts of the vehicle can overheat.
That could cause an engine compartment
re or other damage. When you are stuck,
spin the wheels as little as possible. Do not
spin the wheels above 35 mph (55 km/h)
as shown on the speedometer.Notice:Spinning the wheels can destroy
parts of your vehicle as well as the tires.
If you spin the wheels too fast while shifting
the transmission back and forth, you can
destroy the transmission.
For information about using tire chains on your
vehicle, seeTire Chains on page 389.
Rocking Your Vehicle to Get It Out
First, turn the steering wheel left and right.
That will clear the area around the front wheels.
Your vehicle has a traction control system that
will activate when the system senses that
the wheels are spinning. SeeTraction Control
System (TCS) on page 241for more information.
Then, with the wheels straight ahead, shift
back and forth between REVERSE (R) and a
forward gear, or with a manual transmission,
between FIRST (1) or SECOND (2) and
REVERSE (R), spinning the wheels as little as
possible. Release the accelerator pedal while
you shift, and press lightly on the accelerator
pedal when the transmission is in gear.
286

The Tire and Loading Information label also shows
the size of your vehicle’s original equipment tires
(C) and the recommended cold tire ination
pressures (D). For more information on tires and
ination seeTires on page 367andInation - Tire
Pressure on page 375.
There is also important information on the
Certication/Tire label. It tells you the Gross
Vehicle Weight Rating (GVWR) and the Gross
Axle Weight Rating (GAWR) for the front and
rear axles. See “Certication/Tire Label” later in
this section.
Steps for Determining Correct Load Limit
1. Locate the statement “The combined weight
of occupants and cargo should never exceed
XXX kg or XXX lbs” on your vehicle’s placard.
2. Determine the combined weight of the driver
and passengers that will be riding in your
vehicle.
3. Subtract the combined weight of the driver
and passengers from XXX kg or XXX lbs.4. The resulting gure equals the available
amount of cargo and luggage load capacity.
For example, if the “XXX” amount equals
1400 lbs and there will be ve 150 lb
passengers in your vehicle, the amount of
available cargo and luggage load capacity
is 650 lbs (1400−750 (5 x 150) = 650 lbs).
5. Determine the combined weight of luggage
and cargo being loaded on the vehicle.
That weight may not safely exceed the
available cargo and luggage load capacity
calculated in Step 4.
6. If your vehicle will be towing a trailer, the load
from your trailer will be transferred to your
vehicle. Consult this manual to determine how
this reduces the available cargo and luggage
load capacity of your vehicle.
SeeTowing a Trailer on page 297for important
information on towing a trailer, towing safety,
and trailering tips.
290

If You Do Decide To Pull A Trailer
If you do, here are some important points:
There are many different laws, including speed
limit restrictions, having to do with trailering.
Make sure your rig will be legal, not only where
you live but also where you’ll be driving. A good
source for this information can be state or
provincial police.
Consider using a sway control. See “Hitches”
later in this section.
Don’t tow a trailer at all during the rst 500 miles
(800 km) your new vehicle is driven. Your
engine, axle or other parts could be damaged.
Then, during the rst 500 miles (800 km) that
you tow a trailer, don’t drive over 50 mph
(80 km/h) and don’t make starts at full throttle.
This helps your engine and other parts of your
vehicle wear in at the heavier loads.
If you have an automatic transmission, you can
tow in DRIVE (D). You may want to shift the
transmission to THIRD (3) or, if necessary, a
lower gear if the transmission shifts too often
under heavy loads and/or hilly conditions. If you
have a manual transmission and you are towing
a trailer, it is better not to use the highest gear.Three important considerations have to do with
weight:
the weight of the trailer
the weight of the trailer tongue
and the weight on your vehicle’s tires
Weight of the Trailer
How heavy can a trailer safely be?
It depends on how you plan to use your rig.
For example, speed, altitude, road grades, outside
temperature and how much your vehicle is used
to pull a trailer are all important. It can depend
on any special equipment that you have on your
vehicle, and the amount of tongue weight the
vehicle can carry. See “Weight of the Trailer
Tongue” later in this section for more information.
Maximum trailer weight is calculated assuming
only the driver is in the tow vehicle and it has all
the required trailering equipment. The weight
of additional optional equipment, passengers and
cargo in the tow vehicle must be subtracted
from the maximum trailer weight.
298

The trailer tongue weight (A) should be 10 percent
to 15 percent of the total loaded trailer weight (B),
up to a maximum of 500 lbs (227 kg) with a weight
carrying hitch or a weight distributing hitch.
Do not exceed the maximum allowable tongue
weight for your vehicle. Choose the shortest hitch
extension that will position the hitch ball closest
to the vehicle. This will help reduce the effect
of trailer tongue weight on the rear axle.Your spare tire carrier is behind the tailgate.
If your hitch extension is too short, the spare
tire may interfere with trailer coupling or trailer
tongue jack operation on some types of trailers.
After you’ve loaded your trailer, weigh the
trailer and then the tongue, separately, to see if
the weights are proper. If they aren’t, you may be
able to get them right simply by moving some
items around in the trailer.Total Weight on Your Vehicle’s Tires
Be sure your vehicle’s tires are inated to the
upper limit for cold tires. You’ll nd these numbers
on the Certication/Tire Label located on the
B-pillar below the door latch or seeLoading Your
Vehicle on page 289. Then be sure you don’t
go over the GVW limit for your vehicle, or
the GAWR, including the weight of the trailer
tongue. If you use a weight distributing hitch, make
sure you don’t go over the rear axle limit before
you apply the weight distribution spring bars.
300

Driving with a Trailer
Towing a trailer requires a certain amount of
experience. Before setting out for the open road,
you’ll want to get to know your rig. Acquaint
yourself with the feel of handling and braking with
the added weight of the trailer. And always
keep in mind that the vehicle you are driving is
now a good deal longer and not nearly as
responsive as your vehicle is by itself.
Before you start, check all trailer hitch parts and
attachments, safety chains, electrical connector,
lamps, tires and mirror adjustment. If the trailer has
electric brakes, start your vehicle and trailer moving
and then apply the trailer brake controller by hand
to be sure the brakes are working. This lets you
check your electrical connection at the same time.
During your trip, check occasionally to be sure
that the load is secure, and that the lamps and
any trailer brakes are still working.
Following Distance
Stay at least twice as far behind the vehicle ahead
as you would when driving your vehicle without
a trailer. This can help you avoid situations
that require heavy braking and sudden turns.
Passing
You’ll need more passing distance up ahead when
you’re towing a trailer. Because you’re a good
deal longer, you’ll need to go much farther beyond
the passed vehicle before you can return to
your lane.
Backing Up
Hold the bottom of the steering wheel with one
hand. Then, to move the trailer to the left, just move
that hand to the left. To move the trailer to the right,
move your hand to the right. Always back up slowly
and, if possible, have someone guide you.
Making Turns
Notice:Making very sharp turns while
trailering could cause the trailer to come in
contact with the vehicle. Your vehicle could
be damaged. Avoid making very sharp
turns while trailering.
When you’re turning with a trailer, make wider
turns than normal. Do this so your trailer
won’t strike soft shoulders, curbs, road signs,
trees or other objects. Avoid jerky or sudden
maneuvers. Signal well in advance.
304

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

Appearance Care........................................ 406
Cleaning the Inside of Your Vehicle.......... 406
Fabric/Carpet............................................. 407
Leather...................................................... 408
Instrument Panel, Vinyl, and Other
Plastic Surfaces..................................... 409
Care of Safety Belts.................................. 409
Weatherstrips............................................ 409
Washing Your Vehicle............................... 410
Cleaning Exterior Lamps/Lenses................ 410
Finish Care............................................... 410
Windshield, Backglass, and Wiper Blades.... 411
Aluminum or Chrome-Plated Wheels......... 412
Tires......................................................... 413
Sheet Metal Damage................................. 413
Finish Damage.......................................... 413Underbody Maintenance............................ 413
Chemical Paint Spotting............................ 414
Vehicle Care/Appearance Materials............ 414
Vehicle Identication.................................. 415
Vehicle Identication Number (VIN)........... 415
Service Parts Identication Label............... 416
Electrical System........................................ 416
Add-On Electrical Equipment..................... 416
Windshield Wiper Fuses............................ 417
Power Windows and Other Power
Options.................................................. 417
Fuses and Circuit Breakers....................... 417
Engine Compartment Fuse Block............... 418
Capacities and Specications.................... 422
Section 5 Service and Appearance Care
313