GMC 2007 Envoy - Manual (Page 192)

H (Vent): This mode directs air to the instrument
panel outlets.
)
(Bi-Level): This mode directs approximately
half of the air to the instrument panel outlets, then
directs the remaining air to the floor outlets.
A little air is directed toward the windshield and the
side window outlets. Cooler air is directed to the
upper outlets and warmer air to the floor outlets.
6 (Floor): This mode directs most of the air to the
floor outlets. Some air also comes out of the
defroster and side window outlets. The recirculation
button cannot be selected in floor mode.
@ (Recirculation): Press this button to turn
recirculation mode on or off. When this button is
pressed, an indicator light in the button will also
come on to let you know that it is activated.
Recirculation mode is used to recirculate the air
inside of your vehicle. Use this mode to help
prevent outside odors and/or dust from entering
your vehicle or to help cool the air inside of your
vehicle more quickly. Recirculation mode can be
used with vent and bi-level modes, but it cannot be
used with floor, defog or defrost modes. Defog and
defrost modes are described later in this section.
If recirculation mode is selected with floor, defog, or
defrost modes, the indicator will flash three times
and then turn off indicating the selection is not
available.
You may also notice that the air conditioning
compressor will run while in recirculation mode.
This is normal and will help to prevent fogging.
If the weather is cold and damp, the system may
cause the windows to fog while using recirculation
mode. If the windows do start to fog, select defog or
defrost mode and increase fan speed.
Recirculation mode, if selected, will be cleared
when the engine is turned off.
# A/C (Air Conditioning): Press this button to
manually turn the air conditioning system on or off.
When the system is on, the system will
automatically begin to cool and dehumidify the air
inside of your vehicle. The air conditioning
symbol will appear on the display when the air
conditioning is on and will turn off when the
air conditioning is off.
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