Hummer 2008 H3 User manual

Seats and Restraint Systems ........................... 1-1
Front Seats ............................................... 1-2
Rear Seats ............................................... 1-8
Safety Belts ............................................. 1-10
Child Restraints ....................................... 1-30
Airbag System ......................................... 1-54
Restraint System Check ............................ 1-69
Features and Controls ..................................... 2-1
Keys ........................................................ 2-3
Doors and Locks ....................................... 2-7
Windows ................................................. 2-11
Theft-Deterrent Systems ............................ 2-14
Starting and Operating Your Vehicle ........... 2-18
Mirrors .................................................... 2-38
Object Detection Systems .......................... 2-44
OnStar
®
System ...................................... 2-48
Universal Home Remote System ................ 2-51
Storage Areas ......................................... 2-56
Sunroof .................................................. 2-60
Instrument Panel ............................................. 3-1
Instrument Panel Overview .......................... 3-4
Climate Controls ...................................... 3-22
Warning Lights, Gages, and Indicators ........ 3-25
Driver Information Center (DIC) .................. 3-40
Audio System(s) ....................................... 3-48
Driving Your Vehicle ....................................... 4-1
Your Driving, the Road, and Your Vehicle ..... 4-2
Towing ................................................... 4-48
Service and Appearance Care .......................... 5-1
Service ..................................................... 5-3
Fuel ......................................................... 5-5
Checking Things Under the Hood ............... 5-11
Rear Axle ............................................... 5-45
Four-Wheel Drive ..................................... 5-46
Front Axle ............................................... 5-46
Headlamp Aiming ..................................... 5-46
Bulb Replacement .................................... 5-49
Windshield Wiper Blade Replacement ......... 5-52
Tires ...................................................... 5-54
Appearance Care ..................................... 5-91
Vehicle Identification ............................... 5-100
Electrical System .................................... 5-101
Capacities and Specifications ................... 5-107
Maintenance Schedule ..................................... 6-1
Maintenance Schedule ................................ 6-2
Customer Assistance Information .................... 7-1
Customer Assistance and Information ........... 7-2
Reporting Safety Defects ........................... 7-14
Vehicle Data Recording and Privacy ........... 7-16
Index .................................................................1
2008 HUMMER H3 Owner Manual M

GENERAL MOTORS, GM, the GM Emblem, HUMMER,
and H3 are registered trademarks of General Motors
Corporation.
This manual includes the latest information at the time it
was printed. We reserve the right to make changes
after that time without further notice. For vehicles first
sold in Canada, substitute the name “General Motors of
Canada Limited” for HUMMER whenever it appears
in this manual.
This manual describes features that may be available in
this model, but your vehicle may not have all of them.
For example, more than one entertainment system may
be offered or your vehicle may have been ordered
without a front passenger or rear seats.
Keep this manual in the vehicle for quick reference.
Canadian Owners
A French language copy of this manual can be obtained
from your dealer/retailer or from:
Helm, Incorporated
P.O. Box 07130
Detroit, MI 48207
1-800-551-4123
www.helminc.com
Propriétaires Canadiens
On peut obtenir un exemplaire de ce guide en français
auprès de concessionnaire ou à l’adresse suivante:
Helm Incorporated
P.O. Box 07130
Detroit, MI 48207
1-800-551-4123
www.helminc.com
Litho in U.S.A.
Part No. 15862068 A First Printing
©
2007 General Motors Corporation. All Rights Reserved.
ii

Using this Manual
Many people read the owner manual from beginning to
end when they first receive their new vehicle to learn
about the vehicle’s features and controls. Pictures
and words work together to explain things.
Index
A good place to quickly locate information about
the vehicle is the Index in the back of the manual.
It is an alphabetical list of what is in the manual
and the page number where it can be found.
Safety Warnings and Symbols
There are a number of safety cautions in this book.
A box with the word CAUTION is used to tell about
things that could hurt you or others if you were to
ignore the warning.
{CAUTION:
These mean there is something that could hurt
you or other people.
We tell you what the hazard is and what to do to help
avoid or reduce the hazard. Please read these cautions.
If you do not, you or others could be hurt.
A circle with a slash
through it is a safety
symbol which means
“Do Not,” “Do Not do
this” or “Do Not let
this happen.”
iii

Vehicle Damage Warnings
You will also find notices in this manual.
Notice: These mean there is something that
could damage your vehicle.
A notice tells about something that can damage the
vehicle. Many times, this damage would not be covered
by your vehicle’s warranty, and it could be costly.
The notice tells what to do to help avoid the damage.
When you read other manuals, you might see
CAUTION and NOTICE warnings in different colors
or in different words.
There are also warning labels on the vehicle which
use the same words, CAUTION or NOTICE.
Vehicle Symbols
The vehicle has components and labels that use
symbols instead of text. Symbols are shown along
with the text describing the operation or information
relating to a specific component, control, message,
gage, or indicator.
iv

Front Seats ......................................................1-2
Manual Seats ................................................1-2
Power Seats ..................................................1-3
Power Lumbar ...............................................1-3
Heated Seats .................................................1-4
Reclining Seatbacks ........................................1-4
Head Restraints .............................................1-7
Rear Seats .......................................................1-8
60/40 Split Bench Seat ...................................1-8
Safety Belts ...................................................1-10
Safety Belts: They Are for Everyone ................1-10
How to Wear Safety Belts Properly .................1-16
Lap-Shoulder Belt .........................................1-24
Safety Belt Use During Pregnancy ..................1-29
Safety Belt Extender .....................................1-30
Child Restraints .............................................1-30
Older Children ..............................................1-30
Infants and Young Children ............................1-33
Child Restraint Systems .................................1-37
Where to Put the Restraint .............................1-40
Lower Anchors and Tethers for
Children (LATCH) ......................................1-42
Securing a Child Restraint in a
Rear Outside Seat Position .........................1-48
Securing a Child Restraint in the
Center Rear Seat Position ..........................1-50
Securing a Child Restraint in the
Right Front Seat Position ............................1-51
Airbag System ...............................................1-54
Where Are the Airbags? ................................1-57
When Should an Airbag Inflate? .....................1-59
What Makes an Airbag Inflate? .......................1-60
How Does an Airbag Restrain? .......................1-60
What Will You See After an Airbag Inflates? .....1-61
Passenger Sensing System ............................1-62
Servicing Your Airbag-Equipped Vehicle ...........1-67
Adding Equipment to Your
Airbag-Equipped Vehicle .............................1-68
Restraint System Check ..................................1-69
Checking the Restraint Systems ......................1-69
Replacing Restraint System Parts
After a Crash ............................................1-70
Section 1 Seats and Restraint Systems
1-1

Front Seats
Manual Seats
{CAUTION:
You can lose control of the vehicle if you try to
adjust a manual driver’s seat while the vehicle
is moving. The sudden movement could startle
and confuse you, or make you push a pedal
when you do not want to. Adjust the driver’s
seat only when the vehicle is not moving.
To move a manual seat forward or rearward:
1. Lift the bar to unlock
the seat.
2. Slide the seat to the
desired position and
release the bar.
Try to move the seat with your body to be sure the seat
is locked in place.
1-2

Power Seats
If the vehicle has power
seats, the controls used to
operate them are located
on the outboard side of
the seats.
To adjust the seat, do any of the following:
•Move the seat forward or rearward by sliding the
control forward or rearward.
•Raise or lower the front part of the seat cushion
by moving the front of the control up or down.
•Raise or lower the rear part of the seat cushion
by moving the rear of the control up or down.
Power Lumbar
If your vehicle has this
feature, the control is
located on the outboard
side of the seat(s).
Press and hold the front of the control until you have
the desired lumbar support. To decrease lumbar
support, press and hold the rear of the control.
1-3

Heated Seats
If your vehicle has this
feature, the controls are
located on the outboard
side of the front seats.
This feature will heat the cushion and back of the seats.
Press the top of the switch to turn the heat to the
high setting. Press the bottom of the switch to turn the
heat to the low setting. Put the switch in the center
position to turn the heat off.
The ignition must be on for the heated seat feature to
work. The seat will heat to the last setting if the ignition
has been turned off and then turned back on.
The passenger’s safety belt must be fastened for the
heated seat feature to work on the passenger’s seat.
Reclining Seatbacks
{CAUTION:
You can lose control of the vehicle if you try to
adjust a manual driver’s seat while the vehicle
is moving. The sudden movement could startle
and confuse you, or make you push a pedal
when you do not want to. Adjust the driver’s
seat only when the vehicle is not moving.
1-4

{CAUTION:
If the seatback is not locked, it could move
forward in a sudden stop or crash. That
could cause injury to the person sitting there.
Always push and pull on the seatback to be
sure it is locked.
The seats have manual reclining seatbacks. The lever
used to operate them is located on the outboard side
of the seats.
To recline the seatback:
1. Lift the recline lever and move the seatback to
the desired position, then release the lever to
lock the seatback in place.
2. Push and pull on the seatback to make sure
it is locked.
To return the seatback to an upright position:
1. Lift the lever fully without applying pressure to
the seatback and the seatback will return to
the upright position.
2. Push and pull on the seatback to make sure
it is locked.
1-5

{CAUTION:
Sitting in a reclined position when your vehicle
is in motion can be dangerous. Even if you
buckle up, your safety belts cannot do their
job when you are reclined like this.
The shoulder belt cannot do its job because it
will not be against your body. Instead, it will be
in front of you. In a crash, you could go into it,
receiving neck or other injuries.
The lap belt cannot do its job either. In a
crash, the belt could go up over your
abdomen. The belt forces would be there,
not at your pelvic bones. This could cause
serious internal injuries.
For proper protection when the vehicle is in
motion, have the seatback upright. Then sit
well back in the seat and wear your safety
belt properly.
Do not have a seatback reclined if your vehicle is moving.
1-6

Head Restraints
Adjust the head restraint so that the top of the restraint
is at the same height as the occupant’s head. This
position reduces the chance of a neck injury in a crash.
Pull the head restraint
up to raise it. To lower
the head restraint,
press the button,
located on the top
of the seatback,
and push the head
restraint down.
1-7

Rear Seats
60/40 Split Bench Seat
The 60/40 split bench seats can be folded to give
you more cargo space.
Folding the Seatbacks
To fold the rear seatback(s), do the following:
1. Make sure that nothing is on, under,
or in front of the seat.
2. Place your hand under
the front of the seat
cushion and lift
the cushion up while
moving it forward.
There is a label below the seat cushion with
instructions to aid in seat operation.
1-8

3. Pull the cushion forward until it rests in the footwell.
Notice: Folding a rear seat with the safety belts
still fastened may cause damage to the seat or the
safety belts. Always unbuckle the safety belts
and return them to their normal stowed position
before folding a rear seat.
4. Lift the latch on top of the seatback and pull the
seatback forward. Fold the seatback down until it
is nearly flat.
5. If the seatback will not fold nearly flat, try moving
the front seat forward and/or moving the front
seatback more upright.
6. Repeat the steps for the other half of the 60/40 split
bench seat.
1-9

Returning the Seatbacks to an
Upright Position
{CAUTION:
If the seatback is not locked, it could move
forward in a sudden stop or crash. That
could cause injury to the person sitting there.
Always push and pull on the seatback to be
sure it is locked.
{CAUTION:
A safety belt that is improperly routed, not
properly attached, or twisted will not provide
the protection needed in a crash. The person
wearing the belt could be seriously injured.
After raising the rear seatback, always check
to be sure that the safety belts are properly
routed and attached, and are not twisted.
To return the seatback(s) to the upright position, do the
following:
1. Lift the seatback up and push it rearward all the way.
2. Place your hand under the front of the seat cushion
and lift the cushion while moving it rearward until it
latches into position.
3. Pull forward on the seatback and push down on
the seat cushion to make sure the seat is securely
in place.
Safety Belts
Safety Belts: They Are for Everyone
This part of the manual tells you how to use safety
belts properly. It also tells you some things you should
not do with safety belts.
1-10

{CAUTION:
Do not let anyone ride where he or she cannot
wear a safety belt properly. If you are in a crash
and you are not wearing a safety belt, your
injuries can be much worse. You can hit things
inside the vehicle harder or be ejected from it
and be seriously injured or killed. In the same
crash, you might not be, if you are buckled up.
Always fasten your safety belt, and check that
your passenger(s) are restrained properly too.
{CAUTION:
It is extremely dangerous to ride in a cargo area,
inside or outside of a vehicle. In a collision,
people riding in these areas are more likely
to be seriously injured or killed. Do not allow
people to ride in any area of your vehicle that
is not equipped with seats and safety belts.
Be sure everyone in your vehicle is in a seat
and using a safety belt properly.
Your vehicle has indicators as a reminder to buckle your
safety belts. See Safety Belt Reminders on page 3-28.
In most states and in all Canadian provinces, the
law requires wearing safety belts. Here is why:
You never know if you will be in a crash. If you do have
a crash, you do not know if it will be a serious one.
A few crashes are mild, and some crashes can be
so serious that even buckled up, a person would not
survive. But most crashes are in between. In many
of them, people who buckle up can survive and
sometimes walk away. Without belts they could
have been badly hurt or killed.
After more than 40 years of safety belts in vehicles,
the facts are clear. In most crashes buckling up
does matter... a lot!
1-11

Why Safety Belts Work
When you ride in or on anything, you go as fast as it goes.
Take the simplest vehicle. Suppose it is just a seat
on wheels.
Put someone on it.
1-12

Get it up to speed. Then stop the vehicle.
The rider does not stop. The person keeps going until stopped by something. In a real vehicle, it could be the windshield...
1-13

or the instrument panel... or the safety belts!
With safety belts, you slow down as the vehicle does.
You get more time to stop. You stop over more
distance, and your strongest bones take the forces.
That is why safety belts make such good sense.
1-14

Questions and Answers About
Safety Belts
Q: Will I be trapped in the vehicle after a crash if
I am wearing a safety belt?
A: You could be — whether you are wearing a safety
belt or not. But your chance of being conscious
during and after an accident, so you can unbuckle
and get out, is much greater if you are belted.
And you can unbuckle a safety belt, even if you
are upside down.
Q: If my vehicle has airbags, why should I have
to wear safety belts?
A: Airbags are supplemental systems only; so they
work with safety belts — not instead of them.
Whether or not an airbag is provided, all occupants
still have to buckle up to get the most protection.
That is true not only in frontal collisions, but
especially in side and other collisions.
Q: If I am a good driver, and I never drive far from
home, why should I wear safety belts?
A: You may be an excellent driver, but if you are in
a crash — even one that is not your fault — you
and your passenger(s) can be hurt. Being a
good driver does not protect you from things
beyond your control, such as bad drivers.
Most accidents occur within 25 miles (40 km)
of home. And the greatest number of serious
injuries and deaths occur at speeds of less than
40 mph (65 km/h).
Safety belts are for everyone.
1-15

How to Wear Safety Belts Properly
This section is only for people of adult size.
Be aware that there are special things to know about
safety belts and children. And there are different
rules for smaller children and babies. If a child will be
riding in your vehicle, see Older Children on page 1-30
or Infants and Young Children on page 1-33. Follow
those rules for everyone’s protection.
It is very important for all occupants to buckle up.
Statistics show that unbelted people are hurt more often
in crashes than those who are wearing safety belts.
Occupants who are not buckled up can be thrown out
of the vehicle in a crash. And they can strike others
in the vehicle who are wearing safety belts.
First, before you or your passenger(s) wear a safety
belt, there is important information you should know. Sit up straight and always keep your feet on the floor in
front of you. The lap part of the belt should be worn low
and snug on the hips, just touching the thighs. In a crash,
this applies force to the strong pelvic bones and you
would be less likely to slide under the lap belt. If you slid
under it, the belt would apply force on your abdomen.
This could cause serious or even fatal injuries. The
shoulder belt should go over the shoulder and across
the chest. These parts of the body are best able to take
belt restraining forces.
The shoulder belt locks if there is a sudden stop or crash.
1-16