Hummer 2009 H2 - Manual (Page 184)

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 deflectors, 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 airflow 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 flow 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
C button.
Rear Climate Control with Rear Seat Audio Controls
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