Chevrolet 2012 Express Owner's Manual page 190

8-2 Climate Controls
Temperature Control: Turn the
knob clockwise or counterclockwise
to increase or decrease the
temperature inside the vehicle.
Air Delivery Mode Control: Turn
the knob clockwise or
counterclockwise to change the
current airflow mode.
H
(Vent): Air is directed to the
instrument panel outlets.
)
(Bi-Level): Air is divided
between the instrument panel and
floor outlets, with some air directed
toward the windshield.
6
(Floor): Air is directed to the
floor outlets with some air directed
to the windshield and side windows.
-
(Defog): This mode clears the
windows of fog or moisture. Outside
air is directed to the floor and
defroster outlets. Adjust the
temperature knob for warmer or
cooler air. The air conditioning
compressor might turn on in this
setting to dehumidify the air.
1
(Defrost): This mode clears
the windshield of fog or frost more
quickly. Air is directed to the
windshield, with some to the floor
outlets and front side windows. The
air conditioning compressor might
turn on in this setting to dehumidify
the air.
Do not drive the vehicle until all the
windows are clear.