air condition HUMMER H2 2009 User Guide

H(Vent):Air is directed to the instrument panel
outlets.
)(Bi-Level):Air is divided between the instrument
panel and oor outlets. Some air is directed towards the
windshield and side window outlets.
6(Floor):Air is directed to the oor outlets, with
some to the windshield, side window outlets, and second
row oor outlets. In this mode, the system automatically
selects outside air.
-(Defog):This mode clears the windows of fog or
moisture. Air is directed to the windshield, oor outlets,
and side window vents. In this mode, the system turns off
recirculation and runs the air conditioning compressor
unless the outside temperature is close to freezing.
The recirculation mode cannot be selected while in
the defog mode.
0(Defrost):This mode removes fog or frost from the
windshield more quickly. Air is directed to the windshield
and side window vents, with some directed to the oor
vents. In this mode, the system automatically forces
outside air into the vehicle and runs the air conditioning
compressor unless the outside temperature is close to
freezing. The recirculation mode cannot be selected while
in the defrost mode.
Do not drive the vehicle until all the windows are clear.
#(Air Conditioning):Press to turn the air
conditioning (A/C) compressor on and off. An indicator
light comes on to show that the air conditioning is on.
If this button is pressed when the air conditioning
compressor is unavailable, the indicator ashes three
times and then turns off. If the air conditioning is on and
the outside temperature drops below a temperature
which is too cool for air conditioning to be effective,
the air conditioning light turns off to show that the air
conditioning mode has been canceled.
On hot days, open the windows long enough to let hot
inside air escape. This helps to reduce the time it takes
for the vehicle to cool down. It also helps the system to
operate more efficiently.
The air conditioning system removes moisture from
the air, so a small amount of water might drip under
the vehicle while idling or after turning off the engine.
This is normal.
@(Recirculation):Press to turn the recirculation
mode on or off. An indicator light comes on to show
that the recirculation is on.
This mode recirculates and helps to quickly cool the
air inside the vehicle. It can be used to help prevent
outside air and odors from entering the vehicle.
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The recirculation mode cannot be used with oor, defog,
or defrost modes. If recirculation is selected with one of
those modes, the indicator light ashes three times and
then turns off. The air conditioning compressor also
comes on when this mode is activated. While in
recirculation mode the windows may fog when the
weather is cold and damp. To clear the fog, select either
the defog or defrost mode and increase the fan speed.
The recirculation mode can also be turned off by turning
off the ignition.
;(Outside Air, If Equipped):Press to turn on the
outside air mode. An indicator light comes on to show that
outside air is on. Air from outside is circulated throughout
the vehicle. The outside air mode can be used with all
modes, but it cannot be used with the recirculation mode.
REAR:For vehicles with the rear heat and air
conditioning controls. Press to turn the rear climate
control system on or off. SeeRear Air Conditioning
and Heating System and Electronic Climate Controls
on page 3-28.
Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog from the rear window.
<(Rear Window Defogger):Press to turn the rear
window defogger on or off. It automatically turns off
several minutes after it has been activated. The defogger
can also be turned off by turning off the engine. Do not
drive the vehicle until all the windows are clear.
Notice:Do not use a razor blade or sharp object to
clear the inside rear window. Do not adhere anything
to the defogger grid lines in the rear glass. These
actions may damage the rear defogger. Repairs
would not be covered by your warranty.
Heated Mirrors:For vehicles with heated outside
rearview mirrors, the mirrors heat to help clear fog or
frost from the surface of the mirror when the rear window
defog button is pressed. SeeOutside Heated Mirrors
on page 2-49.
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Operation Tips

Keep the hood and front air inlets free of ice,
snow, or any other obstruction, such as leaves.
The heater and defroster will work better, reducing
the chance of fogging the inside of the windows.
Keep the air path under the front seats clear of
objects. This helps air to circulate throughout
the vehicle.
Adding outside equipment to the front of the
vehicle, such as hood-air deectors, etc., may affect
the performance of the heating and air conditioning
system. Check with your dealer/retailer before
adding equipment to the outside of the vehicle.
Rear Air Conditioning and Heating
System and Electronic Climate
Controls
For vehicles with the rear heat and air conditioning
controls, they are integrated with the rear seat audio
controls located in the center console. The system can
be controlled from the front controls as well as the
rear controls.A. Fan Control
B. Air Delivery Mode Control
C. Temperature Control
REAR:Press the REAR button on the front climate
control system to turn the rear climate control system on
or off. An indicator comes on when the rear system is on.
The airow direction, temperature, and speed for the rear
of the vehicle will be the same as those set for the front of
the vehicle.
The rear controls can be used to control the air ow for
the rear of the vehicle separately from that of the front of
the vehicle. To turn the system on from the rear seats,
press any rear climate control button, except the
C
button. The rear climate control system can also be
turned off by pressing and holding the
Cbutton. Rear Climate Control with Rear Seat Audio Controls
3-28

{CAUTION:
If the airbag readiness light ever comes on and
stays on, it means that something may be wrong
with the airbag system. For example, the right
front passenger airbag could inate even though
the airbag on-off switch is turned off.
To help avoid injury to yourself or others, have the
vehicle serviced right away. SeeAirbag Readiness
Light on page 3-32for more information, including
important safety information.
If the word ON or the on symbol is lit, it means that
the right front passenger frontal airbag is enabled (may
inate). SeeAirbag Off Switch on page 1-76for more
information, including important safety information.
If, after several seconds, both status indicator lights
remain on, or if there are no lights at all, there may
be a problem with the lights or the airbag on-off switch.
See your dealer/retailer for service.
Charging System Light
This light comes on briey
when the ignition key is
turned to START, but the
engine is not running, as a
check to show it is working.
If it does not, have the vehicle serviced by your
dealer/retailer.
The light should go out once the engine starts. If it stays
on, or comes on while driving, there could be a problem
with the charging system. A charging system message
in the Driver Information Center (DIC) can also appear.
SeeDIC Warnings and Messages on page 3-56for
more information. This light could indicate that there are
problems with a generator drive belt, or that there is an
electrical problem. Have it checked right away. If the
vehicle must be driven a short distance with the light
on, turn off accessories, such as the radio and air
conditioner.
3-35

CHECK TIRE PRESSURE
On vehicles with the Tire Pressure Monitor
System (TPMS), this message displays when the
pressure in one or more of the vehicle’s tires needs to
be checked. This message also displays LEFT FRONT,
RIGHT FRONT, LEFT REAR, or RIGHT REAR to
indicate which tire needs to be checked. You can receive
more than one tire pressure message at a time. To read
the other messages that may have been sent at the same
time, press the set/reset button or the trip odometer reset
stem. If a tire pressure message appears on the DIC,
stop as soon as you can. Have the tire pressures
checked and set to those shown on the Tire Loading
Information label. SeeTires on page 5-57,Loading the
Vehicle on page 4-44, andInflation - Tire Pressure on
page 5-63. The DIC also shows the tire pressure values.
See “DIC Operation and Displays (Using DIC Buttons)”
earlier in this section. If the tire pressure is low, the low
tire pressure warning light comes on. SeeTire Pressure
Light on page 3-39.
DRIVER DOOR OPEN
This message displays and a chime sounds if the driver
door is not fully closed and the vehicle is shifted out
of P (Park). Stop and turn off the vehicle, check the
door for obstructions, and close the door again.
Check to see if the message still appears on the DIC.
ENGINE HOT A/C (Air Conditioning)
TURNED OFF
This message displays when the engine coolant
becomes hotter than the normal operating temperature.
SeeEngine Coolant Temperature Gage on page 3-39.
To avoid added strain on a hot engine, the air
conditioning compressor automatically turns off.
When the coolant temperature returns to normal,
the air conditioning compressor turns back on.
You can continue to drive your vehicle.
If this message continues to appear, have the system
repaired by your dealer/retailer as soon as possible
to avoid damage to the engine.
ENGINE OVERHEATED IDLE ENGINE
Notice:If you drive your vehicle while the engine
is overheating, severe engine damage may occur.
If an overheat warning appears on the instrument
panel cluster and/or DIC, stop the vehicle as soon
as possible. SeeEngine Overheating on page 5-33
for more information.
This message displays when the engine coolant
temperature is too hot. Stop and allow the vehicle
to idle until it cools down. SeeEngine Coolant
Temperature Gage on page 3-39.
SeeOverheated Engine Protection Operating Mode on
page 5-35for information on driving to a safe place
in an emergency.
3-57

RIGHT REAR DOOR OPEN
This message displays and a chime sounds if the
passenger side rear door is not fully closed and the
vehicle is shifted out of P (Park). Stop and turn off the
vehicle, check the door for obstructions, and close
the door again. Check to see if the message still
appears on the DIC.
SERVICE 4 WHEEL DRIVE
(Full-Time Four-Wheel Drive)
This message displays if a problem occurs with the
Full-Time Four-Wheel Drive system. If this message
appears, stop as soon as possible and turn off the
vehicle. Restart the vehicle and check for the message
on the DIC display. If the message is still displayed,
or appears again when you begin driving, there is
a problem with the Full-Time Four-Wheel Drive
system. See your dealer/retailer for service.
SERVICE AIR BAG
This message displays if there is a problem with
the airbag system. Have your dealer/retailer inspect
the system for problems. SeeAirbag Readiness Light
on page 3-32andAirbag System on page 1-67for more
information.
SERVICE BATTERY CHARGING
SYSTEM
On some vehicles, this message displays if there is a
problem with the battery charging system. Under certain
conditions, the charging system light may also turn on in
the instrument panel cluster. SeeCharging System Light
on page 3-35. Driving with this problem could drain the
battery. Turn off all unnecessary accessories. Have the
electrical system checked as soon as possible. See your
dealer/retailer.
SERVICE BRAKE SYSTEM
This message displays along with the brake system
warning light if there is a problem with the brake system.
SeeBrake System Warning Light on page 3-37. If this
message appears, stop as soon as possible and turn
off the vehicle. Restart the vehicle and check for the
message on the DIC display. If the message is still
displayed or appears again when you begin driving,
the brake system needs service as soon as possible.
See your dealer/retailer.
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SERVICE BRAKES SOON
This message displays if there is a problem with the
brake system. If this message appears, stop as soon
as possible and turn off the vehicle. Restart the vehicle
and check for the message on the DIC display. If the
message is still displayed or appears again when
you begin driving, the brake system needs service.
See your dealer/retailer.
SERVICE STABILITRAK
This message displays when there may be a problem
with the StabiliTrak®system. If you see this message, try
to reset the system. Stop; turn off the engine for at least
15 seconds; then start the engine again. If this message
still comes on, it means there is a problem. You should
see your dealer/retailer for service. The vehicle is safe to
drive, however, you do not have the benet of StabiliTrak,
so reduce your speed and drive accordingly.
SERVICE SUSPENSION SYSTEM
On some models, this message displays if a problem
occurs with the suspension system. If this message
appears, stop as soon as possible and turn off
the vehicle. Restart the vehicle and check for the
message on the DIC display. If the message is still
displayed, or appears again when you begin driving,
there is a problem with the air suspension system.
See your dealer/retailer for service.
SERVICE THEFT DETERRENT SYSTEM
This message displays when there is a problem with
the theft-deterrent system. The vehicle may or may not
restart so you may want to take the vehicle to your
dealer/retailer before turning off the engine. See
PASS-Key
®III+ Electronic Immobilizer Operation
on page 2-26for more information.
SERVICE TIRE MONITOR SYSTEM
On vehicles with the Tire Pressure Monitor
System (TPMS), this message displays if a part
on the TPMS is not working properly. The tire pressure
light also ashes and then remains on during the same
ignition cycle. SeeTire Pressure Light on page 3-39.
Several conditions may cause this message to appear.
SeeTire Pressure Monitor Operation on page 5-66for
more information. If the warning comes on and stays
on, there may be a problem with the TPMS. See your
dealer/retailer.
SERVICE TRACTION CONTROL
This message displays when there is a problem with
the Traction Control System (TCS). When this message
displays, the system will not limit wheel spin. Adjust
your driving accordingly. See your dealer/retailer
for service. SeeTraction Control System (TCS) on
page 4-9andStabiliTrak
®System on page 4-6for
more information.
3-61

Sending a Stored Name Tag During a Call
1. Pressbg. The system responds with “Ready”
followed by a tone.
2. Say “Send name tag.” The system responds with
“Say a name tag to send tones” followed by a tone.
3. Say the name tag to send.
If the system clearly recognizes the name tag it
responds with “OK, Sending ” and
the dial tones are sent and the call continues.
If the system is not sure it recognized the
name tag properly, it responds “Dial ,
Please say yes or no?” followed by a tone. If the
name tag is correct, say “Yes”. The system
responds with “OK, Sending ” and
the dial tones are sent and the call continues.
Clearing the System
Unless information is deleted out of the in-vehicle
Bluetooth system, it will be retained indenitely.
This includes all saved name tags in the phonebook
and phone pairing information. For information on how
to delete this information, see the above sections
on Deleting a Paired Phone and Deleting Name Tags.
Other Information
The Bluetooth®word mark and logos are owned by the
Bluetooth®SIG, Inc. and any use of such marks by
General Motors is under license. Other trademarks and
trade names are those of their respective owners.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation.
This device complies with RSS-210 of Industry Canada.
Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation of the device.
Changes or modications to this system by other than
an authorized service facility could void authorization to
use this equipment.
3-117

Traction Control Operation
The traction control system is part of the
StabiliTrak system. Traction control limits wheel
spin by reducing engine power to the wheels (engine
speed management) and by applying brakes to
each individual wheel (brake-traction control) as
necessary.
The traction control system is enabled automatically
when the vehicle is started. It will activate and the
StabiliTrak light will ash if it senses that any of the
wheels are spinning or beginning to lose traction while
driving. If the traction control is turned off, only the
brake-traction control portion of traction control will work.
The engine speed management will be disabled. In this
mode, engine power is not reduced automatically and the
driven wheels can spin more freely. This can cause the
brake-traction control to activate constantly.
Notice:If the wheel(s) of one axle is allowed to
spin excessively while the StabiliTrak, ABS
and brake warning lights and any relevant DIC
messages are displayed, the transfer case could bedamaged. The repairs would not be covered by the
vehicle warranty. Reduce engine power and do
not spin the wheel(s) excessively while these lights
and messages are displayed.
The traction control system may activate on dry or
rough roads or under conditions such as heavy
acceleration while turning or abrupt upshifts/downshifts
of the transmission. When this happens, a reduction
in acceleration may be noticed, or a noise or vibration
may be heard. This is normal.
If cruise control is being used when StabiliTrak activates,
the cruise control automatically disengages. The
cruise control can be re-engaged when road conditions
allow. SeeCruise Control on page 3-12.
StabiliTrak may also turn off automatically if it determines
that a problem exists with the system. If the problem does
not clear itself after restarting the vehicle, see your
dealer/retailer for service.
4-8

The light in the button must stop ashing and remain
illuminated before the rear axle is locked.
Notice:If you try to lock the axle while the vehicle
is stuck and the tires are spinning, the vehicle’s
drivetrain could be damaged. The repairs would not
be covered by the vehicle warranty. Always lock
the 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 40 mph (64 km/h), if the
vehicle’s battery is low and/or the transfer case is
shifted out of Four-Wheel-Low-Lock mode.
Notice:If the vehicle’s axle is locked while driving
on pavement, the drivetrain could be damaged.
Repairs would not be covered by the vehicle
warranty. Do not use the locking axle on pavement.
If four-wheel drive is needed when traveling on
pavement, use only 4HI.Steering
Power Steering
If power steering assist is lost because the engine stops
or the system is not functioning, the vehicle can be
steered but it will take more effort.
Steering Tips
It is important to take curves at a reasonable speed.
Traction in a curve depends on the condition of the tires
and the road surface, the angle at which the curve is
banked, and vehicle speed. While in a curve, speed is
the one factor that can be controlled.
If there is a need to reduce speed, do it before entering
the curve, while the front wheels are straight.
Try to adjust the speed so you can drive through the
curve. Maintain a reasonable, steady speed. Wait
to accelerate until out of the curve, and then accelerate
gently into the straightaway.
4-11