Buick Century 2003 Owner's Manual page 126

Outlet Adjustment
Operation Tips
•
Clear away any ice, snow or leaves from the air
inlets at the base of the windshield that may
block the flow of air into your vehicle.
•
Use of non-GM approved hood deflectors may
adversely affect the performance of the system.
•
Keep the path under the front seats clear of objects
to help circulate the air inside of your vehicle more
effectively.
3-20
Open and close the air
outlets, or adjust the
direction of the airflow by
moving the levers in
the center of each outlet.
•
If the airflow seems low when the fan is at the
highest setting, the passenger compartment
air filter, if equipped, may need to be replaced. For
more information, see Passenger Compartment
Air Filter on page 3-20 and Part A: Scheduled
Maintenance Services on page 6-4
Passenger Compartment Air Filter
The passenger compartment air filter is located in
the engine compartment below the air inlet grille, near
the passenger's side windshield wiper arm.
The filter traps most of the pollen from the air entering
the air conditioning module. Like your engine's air
cleaner filter, it may need to be changed periodically.
For information on how often to change the passenger
compartment air filter, see Scheduled Maintenance
on page 6-5 .
To change the passenger compartment air filter, use the
following steps:
1. Put the ignition in ACCESSORY and turn the
windshield wipers on.
2. Turn the ignition to OFF when the windshield
wipers are in the upright position.
3. Raise the hood.