GMC 2011 Sierra - Manual (Page 284)

Black plate (2,1) GMC Sierra Owner Manual - 2011
8-2 Climate Controls
Temperature Control: Turn
clockwise or counterclockwise
to increase or decrease the
temperature inside the vehicle.
9 (Fan Control): Turn clockwise
or counterclockwise to increase or
decrease the fan speed. Turn the
knob all the way counterclockwise
to turn the front system off.
Air Delivery Mode Control: Turn
clockwise or counterclockwise to
change the direction of the airflow
inside the vehicle. The knob can
be positioned between two modes
to select a combination of those
modes.
Select from the following:
H
(Vent): Air is directed to the
instrument panel outlets.
) (Bi-Level): Air is divided
between the instrument panel
and floor outlets.
6 (Floor): Air is directed to the
floor outlets, with some air directed
to the windshield and side window
outlets. In this mode, the system
automatically selects outside air.
Recirculation cannot be selected
in floor mode.
-
(Defog): This mode clears the
windows of fog or moisture. Air is
directed to the windshield, floor
outlets, and side window vents.
0
(Defrost): This mode removes
fog or frost from the windshield
more quickly. Air is directed to
the windshield and the side
window vents, with some air
directed to the floor vents.
The system automatically forces
outside air into the vehicle.
The recirculation mode cannot be
selected in the defog or defrost
mode. When either mode is
selected, the system runs the air
conditioning compressor, unless
the outside temperature is close
to freezing.
Do not drive the vehicle until all the
windows are clear.
: (Outside Air): Press to
turn the outside air mode on.
An indicator light comes on to
show that outside air is on.
In this mode outside air circulates
throughout the vehicle. The outside
air mode can be used with all
modes, but it cannot be used
with the recirculation mode.