Chevrolet 1999 Malibu Owner's Manual page 127

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BI LEVEL : In this position the air comes
through the instrument panel outlets and through the
floor outlets. Set the center control knob to the
temperature desired.
FLOOR : In this position most of the air comes
through the floor outlet. The rest of the air comes
through the windshield and side window outlets. Set the
center control knob to the temperature desired.
DEFOG : This position divides the air between
the floor outlets and the windshield defroster outlet. The
air conditioning compressor will run automatically in
this position when it is needed to help dry the air in
the vehicle.
DEFROST : This position directs most of the air
through the windshield defroster outlet. Some of the air
goes to the floor outlets. The air conditioning
compressor will run automatically in this position when
it is needed to help dry the air in the vehicle.
Air Conditioning Compressor Button
Press A/C to operate the air conditioner compressor. The
indicator light will glow when the button is pressed to
indicate that the air conditioning system has been
turned on.
Recirculation Button
Press this button to limit the amount of fresh air entering
your vehicle. This is helpful when you are trying to limit
odors entering your vehicle. The indicator light on the
button will glow when it is pressed. RECIRCULATION
is available in all modes, except defog and defrost.
Pressing this button will cancel the OUTSIDE AIR button.
It is not recommended to use this button in the FLOOR
mode with heat. It is useful to quickly cool the vehicle
on hot days.
Outside Air
Press this button to allow the circulation of outside air in
the vehicle. The indicator light on the button will glow
when pressed. OUTSIDE AIR is available in all modes
including OFF and is automatically activated in DEFOG
and DEFROST.
Pressing this button will cancel the
RECIRCULATION button.
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