1996 Oldsmobile Silhouette Owner's Manual - Page 152

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, slide the temperature control lever 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 is already warmed. See "Engine Coolant Heater'' in the Index. %til-.tion Syst 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 heater or the air conditioning fan is running. Your vehicle has airoutlets 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 reducethe amount of airflow by opening and closing the louvers. Opening and closing the louvers will also direct airflow from side to side. If your vehicle is equipped with seats in the third row, you will have a rear air outlet and a rear fan. To maximize airflow to the rear of your vehicle, place the left bucket seat in the second row in the forward position (see "Adjusting Rear Seats" in the Index). This uncovers the rear air outlet.