1993 Oldsmobile Silhouette Owner's Manual - Page 121
1993 Oldsmobile Silhouette Manual
Page 121 highlights
Rear Window Defogger (omoiv) Your vehicle is equipped with side window defogger vents located on the top of the instrument panel. For additional side window defogging, press the BI-LEV button and adjust the fan to the highest speed. Aim the side vents on the instrument panel toward the side windows. For increasedair flow to the side vents, close the center vents. Press R. DEF (Rear Defog) to warm the defogger grid on the rear window.The indicator light will glow while the rear window defogger is operating. The rear window defogger willturn off automatically after about 10 minutes. If you turn it on again, the defogger will operate for about five minutes only. You can also turn the defogger off by turning off the ignition or pressing the switch again. Do not attach a temporary vehicle license across the defogger on the grid rear window. 19 1