2007 Chevrolet Silverado 3500 Pickup Owner's Manual - Page 230

Dual Climate Control System With this system you can control the heating, cooling, and ventilation for your vehicle. Mode Control To change the current mode, select one of the following: H (Vent): This mode directs air to the instrument panel outlets. ) (Bi-Level): This mode directs half of the air to the instrument panel outlets; then directs most of the remaining air to the floor outlets. A little air is directed toward the windshield and the side window outlets. Cooler air is directed to the upper outlets and warmer air to the floor outlets. 6 (Floor): This mode directs most of the air to the floor outlets with a little air directed to the windshield and the side window outlets. h (Recirculation): The recirculation mode is used to recirculate the air inside of your vehicle. Use this mode to help prevent outside odors and/or dust from entering your vehicle or to help cool the air inside of your vehicle more quickly. Press this button to turn the recirculation mode on or off. The light on the recirculation button will illuminate. Recirculation cannot be used in floor, defog or defrost modes. An indicator on the button will light up, flash three times and turn off when recirculation is selected in these modes. Fan Control 9 (Fan): Turn the left knob clockwise or counterclockwise to increase or decrease the fan speed. Turn the knob to the off position to turn off the fan. If the knob is in off, outside air will still enter the vehicle and will be directed based on the position of the mode knob. The temperature can also be adjusted using the temperature levers. Turn the right knob clockwise or counterclockwise to direct the airflow inside of your vehicle. 230