1996 Pontiac Grand Am Owner's Manual - Page 124

Fan Knob 'Theleft controlknob sets the fin speed. To select thle force of air you want, turn the knob. Thefan is always runhing unless the mode control is moved to OFF. d HEATER: This setting brings heated air through the he'aterducts and some through the windshield defroster vents. If you have the optional engine coolant heater (engine block heater)and use it duringcold weather, 0°F (- 18 C) or lower, your heating system will more quickly provide heat be'causethe engine coolant is already warmed. See "Engine CoolantHeater" in the Index. O Temperature Knob The centercontrol knob regulates the temperature the of air coming through the system. , Mode Knob The rightcontrol knob changes the functionsof your system. 2 VENT Use whenoutside temperatures aremild, and little heatingor cooling is needed, Airflow is through the instrument panel outlets.Set the center control h o b to the temperature desired. between theheater ducts and the windshield defroster vents. DEFROST This setting directs airthough the windshield gefroster vents located on top of the instrument panel, 9 BLEND: This setting divides airflow equally ' 9 BI-LEVEL: Use on cool, but sunnydays. This settingbrings in the outside air, but directsit in two ways. Cooler air is directed to the upper portionof your body through the instrument panel outlets; slightly ducts and wanner air is directed through the heater defroster vents.At times, this'temperaturedifference may be more apparent than others, 3-2