(Open): Turn the thumbwheel to this position to open
the air outlets.
 (Closed): Turn the thumbwheel to this position to close
the air outlets.
Use the louvers located on the air outlets to change the direction of the airflow.
Operation Tips
|     •  | Clear away any ice, snow, or leaves from the air inlets at the base of
the vehicle that may block the flow of air into your vehicle. | 
 
|     •  | Use of non-GM approved hood deflectors may adversely affect the performance
of the system. | 
 
|     •  | Keep the path under the front seats clear of objects to help circulate
the air inside of your vehicle more effectively. |