1995 Pontiac Grand Prix Owner's Manual - Page 128

Air Conditioning On very hot days, open the windows long enough to let hot inside air escape. This reduces the time the compressor has to run, which shouldhelp fuel economy. For quick cool-down on very hot days, use MAX with the temperature knob all theway in the blue area. If this setting is used for long periods of time, theair in your vehicle maybecome too dry. Heating On cold days useFLOOR with the temperature knob all the way inthe red area. The system will bring outside in air, heat it and send it to the floor ducts. VENT with the For normal cooling on hot days, use A/C temperature h o b in the blue area and the button pushed in. The system will bring in outside and cool it. air On cool but sunny days, the sun may warm your upper body, but your lower body may notbe warm enough. You can use BI-LEVEL with the temperature knob in the middle and the A/C button pushed in. Thesystem will bring in outside air and direct it to your upper body, while sending slightly warmed air to your lower body. You may notice this temperature difference more at some times thanothers. If your vehicle has an engine coolant heater, youcan use it to help your system provide warm air faster when it's cold outside (0°F (-lS0C) lower). An engine coolant or 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 VENTto direct outside air through your vehicle.Your vehicle also has the flow-through ventilation system described later in this section. Defogging and Defrosting Windows Your system has twosettings for clearing the front and side windows. To defrost the windows quickly, use DEFROST withthe temperature knob all the way in the red area. To warm passengers while keeping the windows clean, use DEFOG. 3-3