2008 HUMMER H2 spare tire

Keys...............................................................2-3
Remote Keyless Entry (RKE) System................2-4
Remote Keyless Entry (RKE) System
Operation...................................................2-5
Remote Vehicle Start......................................2-8
Doors and Locks............................................2-10
Door Locks..................................................2-10
Power Door Locks........................................2-11
Delayed Locking...........................................2-11
Programmable Automatic Door Locks..............2-11
Rear Door Security Locks..............................2-12
Lockout Protection........................................2-12
Liftgate (SUV)..............................................2-13
Midgate
®(SUT)............................................2-14
Tailgate/Spare Tire Carrier.............................2-16
Windows........................................................2-19
Power Windows............................................2-20
Sun Visors...................................................2-23
Theft-Deterrent Systems..................................2-24
Content Theft-Deterrent.................................2-24
PASS-Key
®III+............................................2-26
PASS-Key®III+ Operation..............................2-26Starting and Operating Your Vehicle................2-28
New Vehicle Break-In....................................2-28
Ignition Positions..........................................2-28
Retained Accessory Power (RAP)...................2-29
Starting the Engine.......................................2-30
Engine Coolant Heater..................................2-31
Automatic Transmission Operation...................2-32
Tow/Haul Mode............................................2-36
Full-Time Four-Wheel Drive............................2-36
Parking Brake..............................................2-40
Shifting Into PARK (P)...................................2-41
Shifting Out of PARK (P)...............................2-42
Parking Over Things That Burn.......................2-43
Engine Exhaust............................................2-43
Running the Engine While Parked...................2-44
Mirrors...........................................................2-45
Automatic Dimming Rearview Mirror with
Compass and Temperature Display..............2-45
Outside Power Foldaway Mirrors.....................2-48
Outside Automatic Dimming Mirror..................2-49
Outside Convex Mirror...................................2-49
Outside Heated Mirrors..................................2-49
Section 2 Features and Controls
2-1

Liftgate (SUV)
{CAUTION:
It can be dangerous to drive with the liftgate
open because carbon monoxide (CO) gas can
come into your vehicle. You can not see or
smell CO. It can cause unconsciousness and
even death. If you must drive with the liftgate
open or if electrical wiring or other cable
connections must pass through the seal
between the body and the liftgate:
Make sure all other windows are shut.
Turn the fan on your heating or cooling
system to its highest speed and select the
control setting that will force outside air
into your vehicle. SeeDual Automatic
Climate Control System on page 3-22.
If you have air outlets on or under the
instrument panel, open them all the way.
SeeEngine Exhaust on page 2-43.To lock and unlock the liftgate, use any of the power
door lock switches or the remote keyless entry (RKE)
transmitter.
To open the liftgate, do the following:
1. Move the spare tire carrier out of the way.
See “Opening the Spare Tire Carrier” under
Tailgate/Spare Tire Carrier on page 2-16.
2. Pull the handle located in the center of the door.
To close the liftgate, do the following:
1. Pull the liftgate down until it latches.
2. Move the spare tire carrier back into place.
See “Closing the Spare Tire Carrier” under
Tailgate/Spare Tire Carrier on page 2-16.
2-13

Tailgate/Spare Tire Carrier
Opening the Spare Tire Carrier
To open the spare tire carrier, do the following:
1. Press the button on the pin (B), which is attached to
the cable (A), to remove the pin from the latch nut (C).2. Lift up on the latch on the left side of the vehicle
to release the spare tire carrier from the vehicle.
The handle will stay in the raised position until the
spare tire carrier is closed and latched properly.
{CAUTION:
If you drive with the spare tire carrier
unlatched, you could injure pedestrians or
damage the vehicle. Make sure the carrier is
secure before driving.
2-16

3. Swing the spare tire carrier to the side.
Opening the Tailgate
Lift the release handle while pulling the tailgate
toward you. SUT Model Spare Tire Carrier shown,
SUV Model similar
2-17

Closing the Spare Tire Carrier
To close the spare tire carrier, do the following:
1. On SUT models swing the tailgate up until it latches
rmly into place.
{CAUTION:
The spare tire carrier must be secured so that
it does not strike and injure someone. Always
close it into the latch forcefully. Make sure that
the release handle is fully closed (down) and
that the cable is attached.
2. Move the spare tire carrier back into place until it
latches, by closing it into the latch forcefully.
The spare tire carrier is latched properly when the
latch handle has lowered to the closed position.3. Reinstall the cable (A) by pushing in the button
on the pin (B) and inserting the pin into the latch
bolt nut (C).
4. Pull on the spare tire carrier to make sure it is
rmly latched.
2-18

Rear Vision Camera Location
The image is provided by the camera located on the
rear bumper.
The camera uses a special lens. The distance of the
image that appears on the screen differs from the actual
distance. The area displayed by the camera is limited.
The camera does not display objects which are close
to either corner of the bumper or under the bumper.
The spare tire and carrier extends rearward of the rear
bumper. The area displayed on the screen may vary
according to vehicle orientation or road conditions.
The following illustration shows the eld of view that
the camera provides.
2-52

Notice:The spare tire extends farther away from
rear of the vehicle than the trailer hitch shown
on rear vision camera display. Your spare tire could
hit an object even though there appears to be
enough distance on the display between the trailer
hitch and objects behind you causing vehicle or
property damage. Do not use this system to judge
the distance between the spare tire and objects
behind you.
When the System Does Not Seem To
Work Properly
The rear vision camera system may not work properly
or display a clear image in the following situations:
In the dark.
When the sun or the beam of headlights is shining
directly into the camera lens.
If ice, snow, mud, or anything else builds up on the
camera lens. Clean the lens, rinse it with water, and
wipe it with a soft cloth.
If the back of the vehicle is in an accident, the
position and mounting angle of the camera may
change or the camera may be affected. Be sure to
have the camera and its position and mounting angle
checked at your dealer.
Extreme high or low temperatures or extreme
temperature changes can affect the image displayed.
OnStar®System
OnStar uses several innovative technologies and live
advisors to provide you with a wide range of safety,
security, information, and convenience services. If your
airbags deploy, the system is designed to make an
automatic call to OnStar Emergency advisors who can
request emergency services be sent to your location.
If you lock your keys in the vehicle, call OnStar at
1-888-4-ONSTAR and they can send a signal to unlock
your doors. If you need roadside assistance, press
the OnStar button and they can contact Roadside
Service for you.
OnStar service is provided to you subject to the
OnStar Terms and Conditions. You may cancel your
OnStar service at any time by contacting OnStar.
2-53

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 might 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 Antilock 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, see
Braking on page 4-3.
The airbag system is designed to work properly under a
wide range of conditions, including off-road usage.
Observe safe driving speeds, especially on rough
terrain. As always, wear your safety belt.
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. Remove any
removable side steps. SeeAssist Steps on page 4-32.
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.
4-13