Pontiac 2002 Bonneville - Manual (Page 177)

3-3
Mode Buttons
You may choose the direction of air delivery by
selecting one of the five mode buttons.
(Defog): This setting directs most of the airflow to
the floor ducts and the windshield defroster. A small
amount of airflow is directed to the side window
defroster outlets. This mode can be useful to remove the
moisture from the inside of the windshield when the
outside temperature is cold or the humidity is high.
(Floor): This setting directs most of the airflow to
the floor ducts with some airflow directed to the side
window defrosters. There is also a small amount of
airflow directed to the front defroster.
(Bi - Level): This setting directs airflow through
both the instrument panel outlets and the floor ducts.
There is also a small amount of air directed to the front
defroster and the side window defrosters.
(Vent): This setting directs airflow through the
instrument panel outlets.
FRONT (Defrost): This setting directs most of
the airflow to the windshield defroster with some
airflow to the side window defrosters and floor ducts.
To improve windshield clearing performance when you
select FRONT defrost, your air conditioning compressor
will run automatically above approximately 40
_F (4_C).
This dehumidifies the air to help dry the windshield.
Even though the compressor may be running, the A/C
light will not come on in FRONT defrost unless you
select A/C.
RECIRC (Recirculation): Press this button
to limit the amount of outside air entering your vehicle.
This is helpful when you are trying to quickly cool the
interior of the vehicle or to limit odors entering the
vehicle. RECIRC may be selected in all manual airflow
modes except FRONT defrost. If you select RECIRC
while in defrost, the RECIRC light will flash to let
you know that this is not allowed. This is to help
prevent fogging.