1993 Pontiac Grand Am Owner's Manual - Page 103

Comfort Controls & Audio Systems N3058 Climate Control System With this system, you can control the ventilation and heating in your vehicle. Your vehicle also has the flow-through ventilation systemdescribed later in this section. : The left control knob sets the fan speed. To select the forceof air you want, turn the knob. The fan is always running unless the mode control is moved to OFF'. Temperature Control: The center control knob regulatesthe temperature of the air coming throughthe system. Mode Control: The right control knob changes the functions of your system. $$ (Heater): This setting brings heated air through the heater ducts, and some ;unny days. This setting bringsin the through the windshield defroster vents. 3utside air, but directs itin two ways. rhe cool air is directed tothe upper [f you have the optional engine block 2ortion of your body through the heater and use it during cold weather, instrument panel outlets, but slightly 0°F (-18°C) or lower, your heating warmer air is directed throughthe system will more quickly provide heat heater ducts and defroster vents. At because the engine coolant is already times this temperature difference may be warmed. See theIndex under Engine more apparent than others. Block Heater. (Vent): Use when outside (Blend): This setting dividesair temperatures are mild, and little heating flow equally between the heater ducts or cooling is needed. Air flow is through and the windshield defroster vents. the instrument panel outlets. Setthe (Defrost): This setting directs center control knob to the temperature most air through the windshield desired. defroster vents, and some through the heater ducts. 12 (Bi-Level): Use on cool, but lA 2 m . . 102