2003 Pontiac Sunfire Owner's Manual - Page 125

(Defrost): This mode directs most of the air to the windshield, with some air directed to the side window outlets and the floor outlets. When you select this mode, the system runs the air-conditioning compressor unless the outside temperature is at or below freezing. The air-conditioning indicator light will also be on in this setting. To defog the side windows, set the right knob to floor and the fan knob to the highest setting. You can use the air conditioning while in this setting by pressing the air conditioning button. In both cases, aim the side outlets toward the side windows. For increased airflow to the side outlets, close the center outlets. Do not drive the vehicle until all the windows are clear. (Rear): Press the button to turn the rear window defogger on or off. Be sure to clear as much snow from the rear window as possible. An indicator light above the button will come on to let you know that the rear window defogger is activated. The rear window defogger will turn off approximately 10 minutes after the button is pressed. If turned on again, the defogger will only run for approximately five minutes before turning off. The defogger can also be turned off by pressing the button again or by turning off the engine. Rear Window Defogger The rear window defogger uses a warming grid to remove fog from the rear window. The rear window defogger will only work when the ignition is in RUN. Notice: Don't use anything sharp on the inside of the rear window. If you do, you could cut or damage the warming grid, and the repairs wouldn't be covered by your warranty. Do not attach a temporary vehicle license, tape, a decal or anything similar to the defogger grid. 3-18