1993 Chevrolet Lumina Owner's Manual - Page 103
1993 Chevrolet Lumina Manual
Page 103 highlights
1 Rear Window Defogger (OPTION) To rapidly defrostthe windshield, slide the temperature control lever all the way to the right and press the button. Adjust the fan to thehighest speed. Your vehicle is equipped with side window defogger vents located on the window pillar. For additional side window defogging, pushthe BI-LEV button, set the fan controlat high speed and aim the side ventson the instrument panel towardthe side windows. For increased air flow the to side vents, closethe center vents. The rear window defogger uses a warming gridto remove fog from the rear window. Press lfftl to turn on.The defogger willturn 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 turning off the ignition or pressing the @ button again. Do not attach a temporary vehicle license acrossthe defogger grid on the rear window. 101 I . .