2001 Pontiac Grand Prix Owner's Manual - Page 168
2001 Pontiac Grand Prix Manual
Page 168 highlights
Air Conditioning On very hot days, open the windows long enough to let hot, inside air escape. This reduces the time for the vehicle to cool down. For quick cool down on very hot days, use MAX with the temperature levers all the way in the blue area. If this setting is used for long periods of time, the air in your vehicle may become too dry. For normal cooling on hot days, use UPPER with the temperature levers in the blue area and the A/C button pushed in. The system will bring in outside air and cool it. On cool, but sunny days, the sun may warm your upper body, but your lower body may not be warm enough. To remedy this you can use BI-LEVEL with the temperature levers in the middle and the A/C button pushed in. The system will bring in outside air and direct it to your upper body, while sending slightly warmed air to your lower body. Heating On cold days use FLOOR with the temperature levers all the way in the red area. The system will bring in outside air, heat it and send it to the floor ducts. 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_F (-18_C) or lower. An engine coolant heater warms the coolant your engine and heating system use to provide heat. See "Engine Coolant Heater" in the Index. Ventilation For mild outside temperatures when little heating or cooling is needed, use UPPER, with the A/C button off, to direct outside air through your vehicle. Defogging and Defrosting Your system has two settings for clearing the front and side windows. To defrost the windows quickly, use DEFROST with the temperature levers all the way in the red area. To warm passengers while keeping the windows clear, use DEFOG. 3-4