2008 Chevrolet Impala Owner's Manual - Page 150

Passenger Compartment Air Filter This vehicle has a passenger compartment particulate air filter. It is located underneath the hood just below the windshield wiper arm on the passenger's side of the vehicle, under the air inlet grille. The filter traps most of the pollen from air entering the Climate Control System. Like your engine's air cleaner/filter, it may need to be changed periodically to ensure system performance. For information on how often to change the passenger compartment air filter, see Scheduled Maintenance on page 6-4. To change the passenger compartment air filter, use the following steps: 1. Turn off the ignition when the windshield wipers are in the up position. 2. Raise the vehicle hood. 3. Peel back the hood weatherstrip from the passenger's side of the vehicle halfway to center. 4. Remove the air inlet grille retainers. 5. Lift the air inlet grille and disconnect the washer hose at the quick-connect. 6. Remove the air inlet grille. 7. Remove the water deflector plate. 8. Remove the old passenger compartment air filter. 9. Reverse the steps to install the new air filter. For best climate control system performance, be sure to re-install the air filter. For the type of filter to use, see Normal Maintenance Replacement Parts on page 6-13. 3-26