1997 Buick Regal Owner's Manual - Page 293

Passenger Compartment Air Filter To change the passenger compartment air filter, use the following steps: 1. Turn off the ignition switch when the windshield wipers are in the up position. 2. Raise the hood. 3. Remove (disconnect) the windshield washer pump hose from the fender rail and air inlet grill. 4. Reposition the hood weatherstrip from the right side of the vehicle (peel back halfway to center). 5. Remove (disconnect) the air inlet grill retainers. 6. Remove (disconnect) the air inlet grill. 7. Remove (disconnect)the passenger compartment air filter. The passenger compartment air filter located is underneath yourhood just below the windshield wiper arm on the car's passenger side (underneath the air inlet grill.) The filter traps most of the pollen from the air entering the vehicle. Like your vehicle's air filter, it may need to be changed periodically. For information on how often to change the passenger compartment air filter, see "Maintenance Schedule" in the Index. 8. Then install the new air filter. 9. Replace the air inlet grill retainers. 10. Re-position the hood weatherstrip. 11. Reconnect the windshield washer pump hose to the fender rail and air inlet grill. 12. Close the hood. 13. Return the windshield wipers to the park position.