2009 Chevrolet Impala Owner's Manual - Page 142

Climate Controls Climate Control System The heating, cooling, defrost, defog and ventilation can be controlled with this system. For vehicles with heated seats, see Heated Seats on page 1-6. Temperature Control: Turn the thumbwheels up or down to increase or decrease the temperature on the driver's side or the passenger side of the vehicle. 9 (Fan Control): Turn clockwise or counterclockwise to increase or decrease the fan speed. Positioning the knob between two modes, can select a combination of those modes. If the airflow seems low when the fan is at the highest setting, the passenger compartment air filter may need to be replaced. There will be some airflow noticeable from the various outlets when driving, even with the fan in the off position. For more information, see Passenger Compartment Air Filter on page 3-23 and Scheduled Maintenance on page 6-4. Air Delivery Mode Control: Turn clockwise or counterclockwise to change the direction of the airflow inside the vehicle. A. B. C. D. Fan Control Outside Air Recirculation Air Delivery Mode Control E. Air Conditioning F. Heated Seats G. Driver and Passenger Temperature Controls H. Rear Window Defogger To change the current mode, select one of the following: H (Vent): Air is directed to the instrument panel outlets. ) (Bi-Level): Air is divided between the instrument panel outlets and the floor outlets. 3-20