2009 Pontiac G8 Owner's Manual - Page 159

Climate Controls The air conditioning system removes moisture from the air, so a small amount of water might drip under the vehicle while idling or after turning off the engine. This is normal. The air conditioning should be turned on for at least five to ten minutes once every two weeks to lubricate the air conditioning seals, even in the winter. The recirculation mode cannot be turned on in defrost mode. If / is pressed, the indicator light flashes three times and recirculation stays off. 7-3 Passenger Compartment Air Filter The vehicle has a passenger compartment air filter that filters the outside air entering the vehicle. The filter removes contaminants, such as pollen and dust. See your dealer/retailer for more information. Rear Window Defogger The rear window defogger uses a warming grid to remove fog from the rear window. It only works when the ignition is in ON/RUN. Recirculation (Recirculation): Press to change the air intake between recirculated air and outside air. An indicator light comes on when the recirculation is on. The recirculation mode recycles interior air and is not recommended for extended use. If it is used for a long period of time, the system automatically lets some fresh air into the vehicle for ventilation. / + (Rear Window Defogger): Press to turn on or off. An indicator comes on when the rear window defogger is on. The rear window defogger turns off automatically if it is left on. Notice: Do not use anything sharp on the inside of the rear window. If you do, you could cut or damage the warming grid, and the repairs would not be covered by the vehicle warranty. Do not attach a temporary vehicle license, tape, a decal or anything similar to the defogger grid.