Conditioning) - GMC 2010 Sierra 1500 Crew Cab Owner's Manual

Turn clockwise or counterclockwise
to increase or decrease the fan speed. Turn the knob all
the way counterclockwise to turn the front system off.
counterclockwise to increase or decrease the
temperature inside the vehicle. The knob can be
positioned between two modes to select a combination
of those modes.
Select from the following:
Air is directed to the instrument panel outlets.
Air is divided between the instrument
panel and floor outlets.
Air is directed to the floor outlets, with some
air directed to the windshield, side window, and second
row floor outlets. In this mode, the system automatically
selects outside air.
This mode clears the windows of fog or
moisture. Air is directed to the windshield, floor outlets,
and side window vents.
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.
Do not drive the vehicle until all the windows are clear.
4-20
Turn clockwise or
With this system the heating, cooling, and ventilation
can be controlled.
A. Fan Control
B. Temperature Control
C. Air Delivery Mode
Control
counterclockwise to increase or decrease the
temperature inside the vehicle.
D. Air Conditioning
E. Outside Air
F. Recirculation
G. Rear Window Defogger
Turn clockwise or