Chevrolet 2005 Classic Owner's Manual page 107

A
(Floor): This mode directs most of the air to the
floor outlets with some air directed to the side window
outlets.
The right knob can also be used to select defog or
defrost modes. Information on defogging and defrosting
can be found later in this section.
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(Fan): Turn the left knob clockwise or
counterclockwise to increase or decrease the fan speed.
The fan must be on to run the air-conditioning
compressor.
:
(Outside Air): Press this button to turn the
outside air mode on or off. When this mode is on,
outside air will circulate throughout your vehicle. When
the button is pressed, an indicator light in the button
will come on to let you know that it is activated.
The outside air mode can be used with all modes, but it
cannot be used with the recirculation mode. Pressing
this button will cancel the recirculation mode.
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(Recirculation): This mode keeps outside air
from coming in the vehicle. It can be used to prevent
outside air and odors from entering your vehicle or
to help heat or cool the air inside your vehicle more
quickly. Press this button to turn the recirculation mode
on or off. When the button is pressed, an indicator
light in the button will come on to let you know that it is
activated. The air-conditioning compressor comes
on. The recirculation mode can be used with vent,
bi-level, or floor modes, but it cannot be used with the
defog or defrost modes. Pressing this button will
cancel the outside air mode. When you switch to the
defog or defrost modes the system will automatically
move from recirculation to outside air. When you move
the mode knob back to another mode, the system
will move back into recirculation. When the car is turned
off and back on the system will default to outside air
automatically.
Temperature Control: Turn the center knob clockwise
or counterclockwise to increase or decrease the
temperature inside your vehicle.
When it's cold outside 0°F (−18°C) or lower, use the
engine coolant heater, if equipped, to provide warmer air
faster to your vehicle. An engine coolant heater warms
the coolant that the engine uses to provide heat to
warm the inside of your vehicle. For more information,
see Engine Coolant Heater on page 2-18.
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A/C (Air Conditioning): Press this button to turn
the air-conditioning system on or off. When A/C is
pressed, an indicator light in the button will come on to
let you know that air conditioning is activated.
On hot days, open the windows to let hot inside air
escape; then close them. This helps to reduce the time
it takes for your vehicle to cool down. It also helps
the system to operate more efficiently.
I n f o r ma t i o n P r o v i d e d b y :
3-19