2006 Pontiac Torrent Owner's Manual - Page 131

Defogging and Defrosting Fog or frost on the inside of windows is a result of high humidity (moisture) condensing on the cool window glass. This can be minimized if the climate control system is used properly. Use the defog mode to clear the windows of fog or moisture and warm the passengers. To avoid fogging windows on rainy and humid days at temperatures above freezing, run the air conditioning compressor. Also, it is best to avoid the use of recirculation mode except when maximum A/C performance is needed or for short times to avoid exterior odors. Use the defrost mode to remove fog or frost from the windshield more quickly. When you select either of these modes (or the floor mode which also helps defog the windows slightly), the system runs the air-conditioning compressor and cancels recirculation mode to dry the air; however, the recirculation light will stay on. For best results, clear all snow and ice from the windshield before defrosting. Turn the right knob to select the defog or defrost mode. 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.