Chevrolet 2009 Suburban Owner's Manual page 221

Automatic Operation, If Equipped.
AUTO: Press the air delivery mode button until this
setting is selected to control the inside temperature, air
delivery, and fan speed. AUTO appears in the display
when automatic operation is active.
+/− (Increase/Decrease Temperature): Press the
+ or − buttons to increase or decrease the cabin
temperature. The rear control temperature display will
show the temperature setting increasing or decreasing.
The display only indicates climate control functions when
the system is in rear independent mode.
Manual Operation
D C
(Fan Control): Press these buttons on the rear
seat audio control panel to increase or decrease
the airflow. Pressing the fan up button when the system
is off will turn the system on. The air delivery mode
will remain under automatic control.
+/− (Temperature Control): Press these buttons to
adjust the temperature of the air flowing into the
passenger area. Press the + button for warmer air and
press the − button for cooler air.
N
(Air Delivery Mode Control): Press the mode
button to change the direction of the airflow in the
vehicle. Repeatedly press the button until the desired
mode appears on the display. Multiple presses will cycle
through the delivery selections.
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