2011 Chevrolet Malibu Owner's Manual - Page 197

Climate Controls 8-9 Air Vents Use the lever located in the center of each outlet by moving it either up and down or side-to-side, to change the direction and amount of airflow in the vehicle. . Keep the path under the front seats clear of objects to help circulate the air inside of the vehicle more effectively. When an objectionable odor outside the vehicle is encountered, use the recirculation mode, with the temperature knob at a comfortable setting to prevent the odor from entering the vehicle through the ventilation system. This can be helpful when driving through a long tunnel with poor ventilation. However, extended usage of this mode in cold or cool weather can cause window fogging. . Operation Tips . Clear away any ice, snow, or leaves from the air inlets at the base of the windshield that may block the flow of air into the vehicle. Do not use non-GM approved hood deflectors as they could adversely affect the performance of the system. .