2005 HUMMER H2 power steering

What Will You See After an Airbag
Inates?
After an airbag inates, it quickly deates, so quickly that
some people may not even realize the airbag inated.
Some components of the airbag module – the steering
wheel hub for the driver’s airbag, or the instrument panel
for the right front passenger’s bag – will be hot for a short
time. The parts of the bag that come into contact with you
may be warm, but not too hot to touch. There will be
some smoke and dust coming from the vents in the
deated airbags. Airbag ination does not prevent the
driver from seeing or being able to steer the vehicle, nor
does it stop people from leaving the vehicle.
{CAUTION:
When an airbag inates, there is dust in the
air. This dust could cause breathing problems
for people with a history of asthma or other
breathing trouble. To avoid this, everyone in
the vehicle should get out as soon as it is safe
to do so.
CAUTION: (Continued)
CAUTION: (Continued)
If you have breathing problems but can not get
out of the vehicle after an airbag inates, then
get fresh air by opening a window or a door. If
you experience breathing problems following
an airbag deployment, you should seek
medical attention.
Your vehicle has a feature that will automatically unlock
the doors and turn the interior lamps on when the
airbags inate (if battery power is available). You can
lock the doors again and turn the interior lamps off
by using the door lock and interior lamp controls.
1-64

Global Window Feature
The global window up and
express-down buttons are
located on the driver’s door.
This feature allows all side windows and midgate
window, if equipped, to be opened or closed at the
same time.
q:Press the express-down button to lower all side
windows and midgate window, if equipped, without
stopping. Express-down will operate while the ignition is
in RUN or ACCESSORY, or while Retained Accessory
Power (RAP) is active. SeeRetained Accessory
Power (RAP) on page 2-26.If the key is out of the ignition, express-down will only
activate while the driver’s door is open and the content
theft-deterrent system is disabled. To stop the
express-down, press the up button.
Pressing the global express-down button also activates
the power midgate latch release buttons, if equipped.
See”Lowering the Midgate” underMidgate (SUT)
on page 2-14
n:Press the up button to raise all windows. The
midgate window, if equipped, will express-up while the
side windows will go up a small amount at a time.
Press and hold the up button to raise the four side
windows all the way. The up button operates while the
ignition is in RUN or ACCESSORY, or while RAP is
active.
Midgate Window
If your vehicle has a midgate, the switch to operate the
window is located on the instrument panel to the left
of the steering wheel. SeeInstrument Panel Overview
on page 3-4.
K: Press the bottom of the switch to express-down the
window. Press the top of the switch to express-up the
window. Press the top or bottom of the switch a second
time to stop the window.
2-20

SECOND (2):This position gives you more power but
lower fuel economy. 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).
FIRST (1):This position gives you even more power,
but lower fuel economy than SECOND (2). 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. 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” under
Towing a Trailer on page 4-68for more information.
2-31

The main components of your instrument panel are the following:
A. Air Outlets. SeeOutlet Adjustment on page 3-25.
B. Exterior Lamps Control. SeeExterior Lamps
on page 3-13.
C. OnStar
®and Radio Steering Wheel Buttons (If
Equipped). SeeOnStar®System on page 2-48and
Audio Steering Wheel Controls on page 3-89.
D. Instrument Panel Cluster. SeeInstrument Panel
Cluster on page 3-27.
E. Locking Rear Axle and All-wheel Drive Buttons. See
Locking Rear Axle on page 4-10andAll-Wheel
Drive on page 2-32.
F. Audio System. SeeAudio System(s) on page 3-60.
G. Airbag Switch. SeeAirbag Off Switch on page 1-65.
H. Glove Box. SeeGlove Box on page 2-54.
I. Midgate Glass Up/Down Switch (SUT). SeeMidgate
(SUT) on page 2-14. Rear Wiper/Washer Switch
(SUV). SeeWindshield Washer on page 3-9.
J. Dome Override Button. SeeDome Lamps on
page 3-17.
K. Turn Signal/Multifunction Lever. SeeTurn
Signal/Multifunction Lever on page 3-7.
L. Tilt Lever. SeeTilt Wheel on page 3-6.
M. Driver Information Center (DIC) Buttons. SeeDriver
Information Center (DIC) on page 3-43.N. Parking Brake Release. SeeParking Brake on
page 2-36.
O. Traction Control Button. SeeTraction Control
System (TCS) on page 4-9.
P. Tow/Haul Selector Button. SeeTow/Haul Mode Light
on page 3-42.
Q. Ride Height Selector Button (If Equipped). See
Selectable Extended Rear Ride Height on page 4-65.
R. Cigarette Lighter or Accessory Power Outlet (If
Equipped). SeeAshtrays and Cigarette Lighter on
page 3-18 Accessory Power Outlets on page 3-18.
S. Shift Lever. SeeAutomatic Transmission Operation
on page 2-28.
T. Accessory Power Outlets. SeeAccessory Power
Outlets on page 3-18.
U. OnStar Buttons. SeeOnStar
®System on page 2-48.
V. Rear Window Defogger Button. See “Rear Window
Defogger” underDual Automatic Climate Control
System on page 3-19.
W. Comfort Control System. SeeDual Automatic
Climate Control System on page 3-19.
3-5

C4(Personalization):Press this button to access the
vehicle settings menu and customize the personal
settings on your vehicle.
D
r(Select):Press this button to reset certain DIC
functions and set your personalization settings.
Pressing any of the four DIC buttons or the trip odometer
reset stem will acknowledge DIC messages and clear
them from the DIC display.
DIC Operation and Displays
The Driver Information Center (DIC) comes on when the
ignition is on. After a short delay, the DIC will display
the information that was last displayed before the engine
was turned off.
If a problem is detected, a warning message will appear
on the display. Pressing any of the four DIC buttons
or the trip odometer reset stem will acknowledge or clear
most current warnings or service messages. Some
warnings that cannot be acknowledged or cleared are:
ENGINE OVERHEATED, OIL PRESSURE LOW,
REDUCED ENGINE POWER, TRANS HOT IDLE
ENGINE. These warnings must be dealt with
immediately and therefore cannot be cleared until the
problem has been corrected.You should take any message that appears on the
display seriously and remember that clearing the
message will only make the message disappear, not
correct the problem.
The DIC has different modes which can be accessed by
pressing the four DIC buttons located on the steering
wheel. These buttons are trip information, fuel
information, personalization and select. The button
functions are detailed in the following pages.
Trip Information Button
Press the trip information button to scroll through the
ODOMETER, TRIP A, TRIP B, TIRE PRESSURES,
TIMER and ENGINE HOURS.
Odometer:Press the trip information button until
ODOMETER appears on the display. This mode shows
the total distance the vehicle has been driven in
either miles or kilometers. Pressing the reset stem
located on the instrument cluster with the vehicle off will
also display the odometer.
Trip A:Press the trip information button until TRIP A
appears on the display. This mode shows the current
distance traveled since the last reset for TRIP A in either
miles or kilometers.
3-44

Your Driving, the Road, and Your Vehicle..........4-2
Defensive Driving...........................................4-2
Drunken Driving.............................................4-2
Control of a Vehicle........................................4-5
Braking.........................................................4-6
Anti-Lock Brake System (ABS).........................4-7
Braking in Emergencies...................................4-8
Traction Control System (TCS).........................4-9
Locking Rear Axle........................................4-10
Steering......................................................4-11
Off-Road Recovery.......................................4-13
Passing.......................................................4-13
Loss of Control.............................................4-15
Off-Road Driving...........................................4-16
Driving at Night............................................4-39
Driving in Rain and on Wet Roads..................4-40
City Driving..................................................4-43
Freeway Driving...........................................4-44
Before Leaving on a Long Trip.......................4-45Highway Hypnosis........................................4-46
Hill and Mountain Roads................................4-46
Winter Driving..............................................4-48
If You Are Stuck: In Sand, Mud, Ice or Snow........4-52
Rocking Your Vehicle to Get It Out.................4-53
Recovery Loops...........................................4-53
First Aid Kit and Tool Kit...............................4-55
Front Mounted Receiver.................................4-56
Power Winch Platform...................................4-57
Loading Your Vehicle....................................4-58
Towing..........................................................4-64
Towing Your Vehicle.....................................4-64
Recreational Vehicle Towing...........................4-64
Selectable Extended Rear
Ride Height..............................................4-65
Electronically Controlled Air Suspension
System....................................................4-66
Trailer Recommendations...............................4-67
Towing a Trailer...........................................4-68
Section 4 Driving Your Vehicle
4-1

You must wait for the light in the button to stop ashing
and remain illuminated before the rear axle is locked.
Notice:If you try to lock the rear axle while
your vehicle is stuck and the tires are spinning, you
could damage your vehicle’s drivetrain. The
repairs would not be covered by your warranty.
Always lock the rear axle before attempting
situations and/or navigating terrain which could
possibly cause the vehicle to become stuck.
The locking rear axle will be disengaged when the
vehicle’s speed is greater than 20 mph (32 km/h), if the
vehicle’s battery is low and/or the transfer case is
shifted out of 4LO Lock mode.
Notice:If you lock the rear axle while driving on
pavement, you could damage your vehicle’s
drivetrain. The repairs would not be covered by
your warranty. Do not use the locking rear axle on
pavement. If you need four-wheel drive when
traveling on pavement, use only 4HI.
Steering
Power Steering
If you lose power steering assist because the engine
stops or the system is not functioning, you can steer but
it will take much more effort.
Steering Tips
Driving on Curves
It is important to take curves at a reasonable speed.
A lot of the “driver lost control” accidents mentioned on
the news happen on curves. Here is why:
Experienced driver or beginner, each of us is subject to
the same laws of physics when driving on curves.
The traction of the tires against the road surface makes
it possible for the vehicle to change its path when
you turn the front wheels. If there is no traction, inertia
will keep the vehicle going in the same direction. If
you have ever tried to steer a vehicle on wet ice, you
will understand this.
The traction you can get in a curve depends on the
condition of your tires and the road surface, the angle at
which the curve is banked, and your speed. While you are
in a curve, speed is the one factor you can control.
Suppose you are steering through a sharp curve.
Then you suddenly accelerate. Both control
systems — steering and acceleration — have to do their
work where the tires meet the road. Adding the
sudden acceleration can demand too much of those
places. You can lose control. SeeTraction Control
System (TCS) on page 4-9.
What should you do if this ever happens? Ease up on
the accelerator pedal, steer the vehicle the way you
want it to go, and slow down.
4-11

Approaching a Hill
When you approach a hill, you need to decide if it is
one of those hills that is just too steep to climb, descend
or cross. Steepness can be hard to judge. On a very
small hill, for example, there may be a smooth, constant
incline with only a small change in elevation where
you can easily see all the way to the top. On a large hill,
the incline may get steeper as you near the top, but
you may not see this because the crest of the hill
is hidden by bushes, grass or shrubs.
Here are some other things to consider as you approach
a hill:
Is there a constant incline, or does the hill get
sharply steeper in places?
Is there good traction on the hillside, or will the
surface cause tire slipping?
Is there a straight path up or down the hill so you
will not have to make turning maneuvers?
Are there obstructions on the hill that can block
your path (boulders, trees, logs or ruts)?
What is beyond the hill? Is there a cliff, an
embankment, a drop-off, a fence? Get out and walk
the hill if you do not know. It is the smart way to
nd out.
Is the hill simply too rough? Steep hills often have
ruts, gullies, troughs and exposed rocks because
they are more susceptible to the effects of erosion.
Driving Uphill
Once you decide you can safely drive up the hill, you
need to take some special steps:
Use transmission and transfer case low gear and
get a rm grip on the steering wheel.
Get a smooth start up the hill and try to maintain
your speed. Do not use more power than you
need, because you do not want your wheels to start
spinning or sliding.
Let the traction system work to control any wheel
slippage. The traction control system allows for
moderate wheel spin with some capability to dig in
and power up the hill.
4-30