Chevrolet 2007 Silverado, Owner'S Manual, Page: 247 / 688

Pressing either fan button while the system is off
turns the system on. Pressing either fan button
while in automatic control places the fan
under manual control. The fan setting remains
displayed and the AUTO light turns off. The
air delivery mode remains under automatic control.
HG
(Mode): Press
H
and
G
to manually
change the direction of the airflow in the vehicle.
Repeatedly press either button until the desired
mode appears on the display. Pressing either
mode button while the system is off changes the
air delivery mode without turning the system
on. Pressing either mode button while in automatic
control places the mode under manual control.
The air delivery mode setting is displayed and the
AUTO light turns off. The fan remains under
automatic control.
H
(Vent): Air is directed to the instrument
panel outlets.
)
(Bi-Level): Air is directed partly to the
instrument panel outlets and to the floor outlets. A
little air is directed towards the windshield and
side window outlets. Cooler air is directed to the
upper outlets and warmer air to the floor outlets.
6
(Floor): Air is directed to the floor outlets, with
some to the windshield, side window outlets,
and second row floor outlets. In this mode, the
system will automatically select outside air.
-
(Defog): See “Defogging and Defrosting” later
in this section.
@
(Recirculation): Press this button to turn the
recirculation mode on. When the button is
pressed, an indicator light comes on.
This mode keeps outside air from entering the
vehicle. It can be used to reduce outside air and
prevent odors from entering the vehicle.
Recirculation may also help cool the air inside the
vehicle more quickly once the temperature inside
the vehicle is less than the outside temperature.
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