Hummer 2009 H2 - Manual (Page 179)

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 flows 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.
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