2007 HUMMER H2 trailer

Starting and Operating Your
Vehicle
New Vehicle Break-In
Notice:Your vehicle does not need an
elaborate break-in. But it will perform better in
the long run if you follow these guidelines:
Keep your speed at 55 mph (88 km/h)
or less for the rst 500 miles (805 km).
Do not drive at any one constant speed,
fast or slow, for the rst 500 miles
(805 km). Do not make full-throttle starts.
Avoid downshifting to brake, or slow,
the vehicle.
Avoid making hard stops for the rst
200 miles (322 km) or so. During this time
your new brake linings are not yet
broken in. Hard stops with new linings can
mean premature wear and earlier
replacement. Follow this breaking-in
guideline every time you get new brake
linings.
Do not tow a trailer during break-in. See
Towing a Trailer on page 374for the
trailer towing capabilities of your vehicle
and more information.
Following break-in, engine speed and load can
be gradually increased.
119

Automatic Transmission Operation
Your vehicle is equipped with an automatic
transmission and features an electronic shift
position indicator located within the instrument
panel cluster.
There are several different positions for your
shift lever.
PARK (P):This position locks your drive wheels. It
is the best position to use when you start your
engine because your vehicle cannot move easily.
{CAUTION:
It is dangerous to get out of your vehicle
if the shift lever is not fully in PARK (P)
with the parking brake rmly set. Your
vehicle can roll.
Do not leave your vehicle when the engine
is running unless you have to. If you have
left the engine running, the vehicle can
move suddenly. You or others could be
injured. To be sure your vehicle will not
move, even when you are on fairly level
ground, always set your parking brake
and move the shift lever to PARK (P). See
Shifting Into Park (P) on page 134.Ifyou
are pulling a trailer, seeTowing a Trailer
on page 374.
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DRIVE (D):This position is for normal driving. It
provides the best fuel economy for your vehicle. If
you need more power for passing, and you are:
Going less than about 35 mph (55 km/h),
push your accelerator pedal about
halfway down.
Going about 35 mph (55 km/h) or more, push
the accelerator all the way down.
You will shift down to the next gear and have
more power.
Downshifting the transmission in slippery road
conditions could result in skidding, see “Skidding”
underLoss of Control on page 316.
DRIVE (D) can be used when towing a trailer,
carrying a heavy load, driving on steep hills or for
off-road driving. You may want to shift the
transmission to THIRD (3) or, if necessary, a lower
gear selection if the transmission shifts too often.THIRD (3):This position is used for normal
driving. It reduces vehicle speed more than
DRIVE (D) without using your brakes. You might
choose THIRD (3) instead of DRIVE (D) when
driving on hilly, winding roads, when towing
a trailer, so there is less shifting between gears
and when going down a steep hill.
SECOND (2):This position reduces vehicle speed
even more than THIRD (3) without using your
brakes. You can use SECOND (2) on hills. It can
help control your speed as you go down steep
mountain roads, but then you would also want to
use your brakes off and on.
If you manually select SECOND (2), the
transmission will drive in second gear. You may
use this feature for reducing the speed of the rear
wheels when you are trying to start your vehicle
from a stop on slippery road surfaces. Once
the vehicle is moving, shift into DRIVE (D).
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FIRST (1):This position reduces vehicle speed
even more than SECOND (2) without using
your brakes. You can use it on very steep hills, or
in deep snow or mud. If the shift lever is put in
FIRST (1) while the vehicle is moving forward, the
transmission will not shift into rst gear until the
vehicle is going slowly enough.
Notice:Spinning the tires or holding the
vehicle in one place on a hill using only the
accelerator pedal may damage the
transmission. The repair will not be covered by
your warranty. If you are stuck, do not spin
the tires. When stopping on a hill, use the
brakes to hold the vehicle in place.
On cold days, approximately 32°F (0°C) or colder,
your transmission is designed to shift differently
until the engine reaches normal operating
temperature. This is intended to improve heater
performance.Tow/Haul Mode
Your vehicle is equipped
with a tow/haul mode.
The button is located on
the instrument panel
to the right of the
steering wheel.
You can use this feature to assist when towing or
hauling a heavy load. See “Tow/Haul Mode”
underTowing a Trailer on page 374for more
information.
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Parking Brake
To set the parking brake, hold the regular brake
pedal down with your right foot. Push down
the parking brake pedal with your left foot.
A chime will activate and the warning light will
ash when the parking brake is applied and
the vehicle is moving at least 3 mph (5 km/h) for
at least three seconds.To release the parking brake, hold the regular
brake pedal down. Pull the bottom edge of
the lever, located above the parking brake pedal,
with the parking brake symbol, to release the
parking brake.
If the ignition is on when the parking brake is
released, the brake system warning light will
go off.
Notice:Driving with the parking brake on can
overheat the brake system and cause
premature wear or damage to brake system
parts. Verify that the parking brake is fully
released and the brake warning light is
off before driving.
If you are towing a trailer and are parking on any
hill, seeTowing a Trailer on page 374.
133

Shifting Into Park (P)
{CAUTION:
It can be dangerous to get out of your
vehicle if the shift lever is not fully in
PARK (P) with the parking brake rmly
set. Your vehicle can roll. If you have left
the engine running, the vehicle can move
suddenly. You or others could be injured.
To be sure your vehicle will not move,
even when you are on fairly level ground,
use the steps that follow. If you are
pulling a trailer, seeTowing a Trailer on
page 374.
1. Hold the brake pedal down with your right foot
and set the parking brake.
2. Move the shift lever into PARK (P) by pressing
and holding the button on the end of the shift
lever and moving the lever forward as far
as it will go.3. Turn the ignition key to LOCK.
4. Remove the key and take it with you. If you
can leave your vehicle with the ignition key in
your hand, your vehicle is in PARK (P).Leaving Your Vehicle With the Engine
Running
{CAUTION:
It can be dangerous to leave your vehicle
with the engine running. Your vehicle
could move suddenly if the shift lever is
not fully in PARK (P) with the parking
brake rmly set. And, if you leave the
vehicle with the engine running, it could
overheat and even catch re. You or
others could be injured. Do not leave your
vehicle with the engine running.
134

{CAUTION:
Full-time four-wheel drive vehicles with
the transfer case in NEUTRAL will allow
the vehicle to roll, even if your shift lever
is in PARK (P). So, be sure the transfer
case is in a drive gear — not in NEUTRAL.
Always set your parking brake.
Follow the proper steps to be sure your vehicle
will not move. SeeShifting Into Park (P) on
page 134.
If you are pulling a trailer, seeTowing a Trailer on
page 374.
Mirrors
Automatic Dimming Rearview
Mirror with Compass and
Temperature Display
If your vehicle is equipped with an automatic
mirror, it will, when on, automatically dim to the
proper level to minimize glare from lights behind
you after dark.
The mirror also includes a display in the upper
right corner of the mirror face. The compass
reading and the outside temperature will both
appear in the display at the same time. The dual
display can be turned on or off by briey
pressing the compass/temperature button.
O:This is the button for the automatic dimming
and compass/temperature functions.
Your vehicle may also have a Rear Vision
Camera. SeeRear Vision Camera on page 192
for more information.
139

The main components of your instrument panel are the following:
A. Air Outlets. SeeOutlet Adjustment on page 203.
B. Exterior Lamps Control. SeeExterior Lamps on
page 186.
C. Heated Windshield Washer Control
(If Equipped). SeeWindshield Washer on
page 181.
D. OnStar
®and Radio Steering Wheel Buttons.
SeeOnStar®System on page 144and
Audio Steering Wheel Controls on page 296.
E. Instrument Panel Cluster. SeeInstrument Panel
Cluster on page 205.
F. Locking Rear Axle and Full-Time Four-Wheel
Drive Buttons. SeeLocking Rear Axle on
page 311andFull-Time Four-Wheel Drive on
page 128.
G. Audio System. SeeAudio System(s) on
page 241.
H. Airbag Switch. SeeAirbag Off Switch on
page 84.
I. Glove Box. SeeGlove Box on page 160.J. Midgate Glass Up/Down Switch (SUT).
SeeMidgate
®(SUT) on page 105. Rear
Wiper/Washer Switch (SUV). SeeRear Window
Wiper/Washer (SUV) on page 182.
K. Dome Override Button. SeeDome Lamp
Override on page 191.
L. Turn Signal/Multifunction Lever. SeeTurn
Signal/Multifunction Lever on page 178.
M. Tilt Lever. SeeTilt Wheel on page 177.
N. Driver Information Center (DIC) Buttons. See
Driver Information Center (DIC) on page 222.
O. Parking Brake Release. SeeParking Brake
on page 133.
P. Traction Control Button. SeeTraction Control
System (TCS) on page 309.
Q. Tow/Haul Selector Button. See “Tow/Haul
Mode” underTowing a Trailer on page 374.
R. Ride Height Selector Button (If Equipped). See
Selectable Extended Rear Ride Height on
page 371.
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