1997 Buick Skylark Owner's Manual - Page 133

Heating On cold days, use R with the temperature knob all HT. the way in the red area. The system will bring outside in air, heatit and send it to the floor ducts. Rear Window Defogger(If Equipped) The lines you see on the rear window warm the glass. Press the button to start warming your window. Pressing the button again will shut it off. If your vehicle has an engine coolant heater, you can use it to help your system provide warm air faster when it's cold outside(0 O F ( - 18O C) or lower). engine coolant An heater warms the coolant your engine and heating system use to provide heat. See "Engine Coolant Heater" in the Index. Defogging and Defrosting Your system has two settings clearing the windshield for and side windows.To defrost the windows quickly, use FRONT with the temperature knob all way in the red the area. To warrn passengers while keeping the windows clean, use BLEND. To defog the side windows while using the air conditioner, set the right control BI-LEV and the fan to control to the highest setting. the vents toward the Aim side windows. For increased airflow to the side vents, close the center vents. If you turn on the rear defogger while driving at or above 45 mph (70 km/h), it will stay onas long as that speed is maintained. You must press the button to shut it If you off. drive below 45 mph (70 krn/h) for more than 10 minutes, the rear defogger will automatically shut off. 3-4