1993 Pontiac Grand Am Owner's Manual - Page 105

Comfort Controls & Audio Systems Air Conditionina.(CONI) q (Bi-Level): Use on cool, but g sunny days. This setting brings in the outside air, but directs it in two ways. The cool air is directed to the upper portion of your body throughthe instrument panel outlets, but slightly warmer air is directed through the heater ducts and defroster vents. At times this temperature differencemay be more apparent than others. The air conditioner compressor operates in all three air conditioning positions. It also operates (Defrost) in when the outside temperature is higher than about 40°F (4.5"C). Ventilation Use when outside temperatures are mild, and little heating or cooling is needed. Turn the right control knob to (Vent). Air flow is directed through the instrument panel outlets. Set the center control knob to the temperature desired. 2 Heating Turning the right control knobto 7 2 (Heater) and the center control knob clockwise will send heated air through the heater ducts, and some through the defroster vents. (Vent) and (Heater) are economical positions because the air conditioner compressor doesn't run in these two settings. This reduces engine load, resulting in improved fuel economy. If either setting fails to keep 3 you comfortable, or causes your windows to fog up, turn the right control knob to one of the air conditioning positions,or to (j@ (Defrost). If you have the optional engine block heater and use it during cold weather, 0°F (-18°C) or lower, your heating system will more quickly provide heat because the engine coolant is already warmed. See the Index under Engine Block Heater. (Blend): This setting divides air flow equally between the heater ducts and the windshield defroster vents. g v Defrosting The (@ (Defrost) setting directs most air through the defroster vents, and some throughthe heater ducts. 8 . 8 104