1997 Chevrolet Lumina Owner's Manual - Page 141

Your vehicle's flow-through ventilation system supplies outside airinto the vehicle whenit is moving. Outside air will also enter vehicle whenthe air conditioning the fan is running. Defogging and Defrosting Your system has two settings for clearing thefront and side windows. To defrost the windows quickly, use DEFROST with thetemperature knob(s) all the way in the red area.To warm passengers while keeping the windows clean, use DEFOG. Ventilation Tips 0 For mild outside temperatures when little heating or cooling is needed, use VENT to direct outside air through your vehicle. 0 Keep the hood and front air inletfree of ice, snow or any other obstruction,such as leaves. The heater and defroster will workfar better, reducing the chance of fogging the inside of your windows. 0 When you entera vehicle in cold weather, setthe mode toFLOOR and the fan to the highest speed for a few moments before driving off. helps clear This the intake ductsof snow and moisture and reduces the chance of fogging the inside of your windows. 0 Keep the air path under the front seats clear of objects. This helps air to circulate throughout your vehicle. Rear Window Defogger The rear window defogger uses a warming grid to remove fog from the rear window. Press the button to It will turn itself after about ten minutes. If you turn off it on again, thedefogger will only runfor about five minutes before turningoff. You can also turn it off by turning off the ignition or pressing the button again. Do not attachanything like a temporary vehicle license or decal across the defogger grid. 3-5