2006 Chevrolet Malibu Owner's Manual - Page 158

On cool, but sunny days while using manual operation of the automatic system, use bi-level to deliver warm air to the floor and cooler air to the instrument panel outlets. To warm or cool the air delivered, press the temperature buttons to the desired setting. In AUTO mode the system will cool and dehumidify the air inside the vehicle. Also while in AUTO mode, the system will maximize its performance by using recirculation as necessary. On cold days when using manual operation of the automatic system, choose floor mode to deliver air to the floor outlets. To warm or cool the air delivered, push the temperature buttons to the desired setting. If you want to use the automatic mode, turn the knob to AUTO and adjust the temperature by pressing the temperature buttons. 0(Defrost): Turn the mode knob to this position to defrost the windshield. The system will automatically control the fan speed if you select defrost from AUTO mode. If the outside temperature is 40°F (4°C) or warmer, your air conditioning compressor will automatically run to help dehumidify the air and dry the windshield. The air conditioning indicator light will blink three times if you try to turn off the compressor while in this mode. Rear Window Defogger The rear window defogger uses a warming grid to remove fog from the rear window.