2009 Hummer H3T Owner's Manual - Page 139

Instrument Panel Rear Window Defogger The rear window defogger uses a warming grid to remove fog or frost from the rear window when the key is in the ignition and turned to ON/RUN. (Rear Defogger): Press to turn the rear window defogger on or off. After the button is first pressed the rear window defogger stays on for about 15 minutes. If turned on again, the defogger only runs for about seven and one-half minutes. Notice: Do not use anything sharp on the inside of the rear window. If you do, you could cut or damage the warming grid, and the repairs would not be covered by the vehicle warranty. Do not attach a temporary vehicle license, tape, a decal or anything similar to the defogger grid. 3-21 Outlet Adjustment Use the air outlets located in the center and on the side of the instrument panel to direct the airflow. This vehicle has air outlets that allow you to adjust the direction and amount of airflow inside the vehicle. Move the louvers up or down to change the direction of the airflow. Use the thumbwheel under the outlets to change the direction of the airflow from left to right. Operation Tips • Use the recirculation mode for maximum air conditioning performance. • 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. = • 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 the vehicle more effectively.