Ventilation System - Chevrolet 2001 Impala Owner's Manual

Ventilation System

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Your vehicle's flow through ventilation system supplies
outside air into the vehicle when it is moving. Outside
air will also enter the vehicle when the air conditioning
fan is running and the OUTSIDE AIR button is pushed.
If the airflow seems very low when the fan is adjusted
to the highest setting, regardless of the mode setting,
your passenger compartment air filter (if equipped) may
need to be replaced. See "Maintenance Schedule" in
the Index.
3-8
Adjust the direction
of airflow by moving
the vents.
Ventilation Tips
D
Keep the hood and front air inlet free of ice, snow or
any other obstruction (such as leaves). The heater
and defroster will work far better, reducing the
chance of fogging the inside of your windows.
D
When you enter a vehicle in cold weather, adjust the
mode knob to LOWER and the fan to the highest
speed for a few seconds before driving off. This
helps clear the intake ducts of snow and moisture
and reduces the chance of fogging the inside of
your windows.
D
Keep the air path under the front seats clear of
objects. This helps air to circulate throughout
your vehicle.