2009 Chevrolet Silverado 2500 HD Extended Cab Owner's Manual - Page 210

Climate Controls Climate Control System (With Air Conditioning) With this system the heating, cooling, and ventilation can be controlled. Temperature Control: Turn clockwise or counterclockwise to increase or decrease the temperature inside the vehicle. 9 (Fan Control): Turn clockwise or counterclockwise to increase or decrease the fan speed. Turn the knob all the way counterclockwise to turn the front system off. Air Delivery Mode Control: Turn clockwise or counterclockwise to change the direction of the airflow inside the vehicle. The knob can be positioned between two modes to select a combination of those modes. Select from the following: H (Vent): Air is directed to the instrument panel outlets. ) (Bi-Level): Air is divided between the instrument panel and floor outlets. 6 (Floor): A. Fan Control B. Temperature Control C. Air Delivery Mode Control D. E. F. G. Air Conditioning Outside Air Recirculation Rear Window Defogger Air is directed to the floor outlets, with some air directed to the windshield and side window outlets. In this mode, the system automatically selects outside air. Recirculation cannot be selected in floor mode. 3-24