GMC 2006 Envoy Owner's Manual page 165

To change the current mode, select one of the following:
H
(Vent): This mode directs air to the instrument
panel outlets.
)
(Bi-Level): This mode directs about half of the air
to the instrument panel outlets; then directs most of
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 vents
and warmer air to the floor outlets.
6
(Floor): This mode directs most of the air to the
floor outlets with a little air directed to the windshield and
the side window outlets. The recirculation button
cannot be selected while in floor mode.
@
(Recirculation): Recirculation mode is used to
recirculate the air inside of your vehicle. When this button
is pressed, an indicator light in the button will come on to
let you know that it is active. 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. The air conditioning compressor will also come
on when this mode is activated. While in recirculation
mode, the windows may fog when the weather is cold and
damp. To clear the fog, select either the defog or defrost
mode and increase fan speed.
Defog and defrost modes are described later in
this section.
Driver's Side Temperature Knob: The lever on the left
side of the climate control panel is used to raise or
lower the temperature on the driver's side of the vehicle.
Slide the lever up or down to adjust the temperature.
Passenger's Side Temperature Knob: The lever
on the right side of the climate control panel is used to
raise or lower the temperature on the passenger's
side of the vehicle. Slide the lever up or down to adjust
the temperature. This lever also adjusts the temperature
to the rear seat outlets.
When the temperature outside is 0°F (-18°C) or lower,
use the engine coolant heater, if equipped, to provide
warmer air, faster to your vehicle.
#
(Air Conditioning): Press this button to turn the
air-conditioning system on or off. When the button is
pressed, an indicator light will come on and the system
will begin to cool and dehumidify the air inside of your
vehicle. You may notice a slight change in engine
performance when the air conditioning compressor
shuts off and turns on again. This is normal.
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