See also:

Blower Control
Rotate this control to regulate the amount of air forced through the ventilation system in any mode. The blower speed increases as you move the control to the right from the “O” (OFF) ...

Automatic Temperature Control (ATC) — If Equipped
Automatic Temperature Control ...

Engine Block Heater — If Equipped
The engine block heater warms the engine, and permits quicker starts in cold weather. Connect the cord to a standard 110-115 Volt AC electrical outlet with a grounded, three-wire extension cord. ...