Chevrolet 2014 Silverado 2500HD Owner's Manual page 260

8-4 Climate Controls
Climate Control Systems (with Heater Only)
With this system the heating and ventilation can be controlled.
A. Fan Control
B. Temperature Control
C. Air Delivery Mode Control
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
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:
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, side window, and
second row floor outlets. In this
mode, the system automatically
selects outside air.
-
(Defog): This mode clears the
windows of fog or moisture. Air is
directed to the windshield, floor
outlets, and side window vents.