1997 Oldsmobile Silhouette Owner's Manual - Page 198

Heating Turn the temperature knob to the right (toward the red area) to warm the air. Ventilation System Your vehicle's flow-through ventilation system supplies outside air into the vehicle when it is moving. Outside air will also enter the vehicle when the fan is running. Your vehicle has air outlets that allow you to adjust the direction and amount of airflow inside the vehicle. Push the outlet up or down to direct airflow to your preference. Increase or reduce the amount of airflow by opening and closing the louvers. Opening and closing the louvers will also direct airflow from side to side. The air-flow through the vents can be shut off completely by turning the thumb-wheel next to each outlet all the way down. You can also stop outside air from entering by turning the fan to OFF and pushing the RECIRC button. In the LOWER mode, outside air will be brought in and sent through the floor outlets. The heater works best if you keep yourwindows closed while using it. The BI-LEV setting is designed for use on sunny days when the air is only moderately warm or cool. On days like these, the sun may adequately warm your upper body, but your lower body may not be warm enough. For the best results, turn the temperature control knob to the middle position, and then adjust it for comfort. If you have the optional engine coolant heater and use it during cold weather, 0°F (- 18" C ) or lower, your heating system will provide heat more quickly because the engine coolant isalready warmed. See "Engine Coolant Heater" in the Index. 3-4