2009 HUMMER H2 air conditioning

Vehicle Symbol Chart
Here are some additional symbols that may be found on
the vehicle and what they mean. For more information
on the symbol, refer to the index.
9:Airbag Readiness Light
#:Air Conditioning
!:Antilock Brake System (ABS)
g:Audio Steering Wheel Controls or OnStar®
$:Brake System Warning Light
":Charging System
I:Cruise Control
B:Engine Coolant Temperature
O:Exterior Lamps
#:Fog Lamps
.:Fuel Gage
+:Fuses
i:Headlamp High/Low-Beam Changer
j:LATCH System Child Restraints
*:Malfunction Indicator Lamp
::Oil Pressure
}:Power
/:Remote Vehicle Start
>:Safety Belt Reminders
7:Tire Pressure Monitor
_:Tow/Haul Mode
F:Traction Control
M:Windshield Washer Fluid
iv

To replace the battery:
1. Separate the transmitter with a at, thin object
inserted into the notch on the side.
2. Remove the old battery. Do not use a metal object.
3. Insert the new battery, positive side facing down.
Replace with a CR2032 or equivalent battery.
4. Snap the transmitter back together.
Remote Vehicle Start
The remote start feature allows you to start the engine
from outside of the vehicle. It may also start up the
vehicle’s heating or air conditioning systems and rear
window defogger. Normal operation of the system
will return after the key is turned to the ON/RUN
position.
During a remote start, the climate control system
will default to a heating mode during colder outside
temperatures and a cooling mode during warmer
outside temperatures.
During a remote start, the rear window defogger
and heated mirrors, if equipped, will turn on during
colder outside temperatures and will shut off when
the key is turned to ON/RUN.
During a remote start, the heated seats will turn on
during colder outside temperatures and will shut
off when the key is turned to ON/RUN. SeeHeated
Seats on page 1-6for additional information.
2-7

Instrument Panel Overview...............................3-4
Hazard Warning Flashers................................3-6
Horn .............................................................3-6
Tilt Wheel.....................................................3-6
Heated Steering Wheel...................................3-7
Turn Signal/Multifunction Lever.........................3-8
Turn and Lane-Change Signals........................3-8
Headlamp High/Low-Beam Changer..................3-9
Flash-to-Pass.................................................3-9
Windshield Wipers........................................3-10
Windshield Washer.......................................3-10
Rear Window Wiper/Washer...........................3-11
Cruise Control..............................................3-12
Exterior Lamps.............................................3-15
Headlamps on Reminder................................3-16
Daytime Running Lamps (DRL).......................3-16
Automatic Headlamp System..........................3-17
Instrument Panel Brightness...........................3-17
Dome Lamps ...............................................3-18
Dome Lamp Override....................................3-18
Entry/Exit Lighting.........................................3-18
Reading Lamps............................................3-18
Electric Power Management...........................3-19
Battery Run-Down Protection..........................3-19
Accessory Power Outlet(s).............................3-20
Ashtray(s) and Cigarette Lighter......................3-21
Analog Clock...............................................3-21Climate Controls............................................3-22
Dual Automatic Climate Control System...........3-22
Outlet Adjustment.........................................3-27
Rear Air Conditioning and Heating System
and Electronic Climate Controls....................3-28
Warning Lights, Gages, and Indicators............3-29
Instrument Panel Cluster................................3-30
Speedometer and Odometer...........................3-31
Trip Odometer..............................................3-31
Tachometer.................................................3-31
Safety Belt Reminders...................................3-32
Airbag Readiness Light..................................3-32
Airbag Off Light............................................3-33
Charging System Light..................................3-35
Voltmeter Gage............................................3-36
Brake System Warning Light..........................3-37
Antilock Brake System (ABS) Warning Light.....3-38
StabiliTrak
®Indicator Light.............................3-38
Engine Coolant Temperature Gage..................3-39
Tire Pressure Light.......................................3-39
Malfunction Indicator Lamp.............................3-40
Oil Pressure Gage........................................3-42
Oil Pressure Light.........................................3-43
Security Light...............................................3-44
Cruise Control Light......................................3-44
Highbeam On Light.......................................3-44
Section 3 Instrument Panel
3-1

Climate Controls
Dual Automatic Climate Control
System
The heating, cooling, and ventilation in the vehicle can
be controlled with this system. The vehicle also has
a ow-through ventilation system described later in
this section.
A. Fan Control
B. AUTO
C. Defrost
D. Recirculation
E. REARF. Air Delivery Mode
Control
G. Driver Side
Temperature ControlH. Display
I. Power Button
J. Rear Window
DefoggerK. Air Conditioning
L. PASS (Passenger
Setting)
M. Passenger Side
Temperature ControlO(On/Off):Press to turn the climate control
system on or off. Outside air still enters the vehicle,
and is directed to the oor. This direction can be
changed by pressing the mode button. Recirculation
can be selected once you have selected vent or bi-level
mode. The temperature can also be adjusted using
either temperature button. If the air delivery mode or
temperature settings are adjusted with the system off,
the display illuminates briey to show the settings and
then returns to off. The system can be turned back on
by pressing either
O,D,C,#, the defrost or the
AUTO button.
3-22

Driver and Passenger Side Temperature
Control
The driver and passenger side temperature buttons
are used to adjust the temperature of the air coming
through the system on the driver or passengers side
of the vehicle. The temperature can be adjusted even
if the system is turned off. This is possible since outside
air always ows through the system as the vehicle is
moving forward unless it is set to recirculation mode.
See “Recirculation” later in this section.
Press the + or−buttons to increase or decrease
the cabin temperature. The driver side or passenger
side temperature display shows the temperature setting
decreasing or increasing.
The passenger temperature setting can be set to match
the driver temperature setting by pressing the PASS
button and turning off the PASS indicator. When the
passenger temperature setting is set different than
the driver’s setting, the indicator on the PASS button
illuminates and both the driver side and passenger
side temperature displays are shown.
Automatic Operation
AUTO (Automatic):When automatic operation is
active the system will control the inside temperature,
the air delivery, and the fan speed.
Use the steps below to place the entire system in
automatic mode:
1. Press the AUTO button.
When AUTO is selected, the display will change
to show the current temperature(s) and AUTO will
be lit on the display. The current delivery mode
and fan speed will also be displayed for
approximately 5 seconds.
When AUTO is selected, the air conditioning
operation and air inlet will be automatically
controlled. The air conditioning compressor
will run when the outside temperature is over
about 40°F (4°C). The air inlet will normally be
set to outside air. If it is hot outside, the air inlet
may automatically switch to recirculate inside air
to help quickly cool down the vehicle. The light
on the button comes on in recirculation.
3-23

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.
3-25

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.
3-26

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