2002 Pontiac Firebird Owner's Manual - Page 158

Defogging and Defrosting 1. Turn the air knob to the defrost symbol. 2. Turn the temperature knob to the desired setting. 3. Turn the fan knob to the desired speed. The side window defogging works equally as well in the heater, blend and defrost modes. NOTICE: Don't use a razor blade or something else 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 anything like a temporary vehicle license or a decal across the defogger grid on the rear window. Rear Window Defogger (Defogger): Press the button with the defogger symbol to turn on the rear window warming grid. An indicator light will come on to remind you that the defogger is on. The defogger will turn off automatically after about 10 minutes of use. If you turn it on again, the defogger will operate for about five minutes only. You can turn the defogger off by pressing the button again. The indicator light will go off when the system is turned off. 3-4