2002 Buick LeSabre Owner's Manual - Page 168

NOTICE: Do not try to clear frost or other material from the inside of the rear window with a razor blade or anything else that is sharp. This may damage the rear defogger grid. The repairs wouldn't be covered by your warranty. Do not attach a temporary vehicle license, tape or decals across the defogger grid on the rear window. Adjust the direction of airflow by moving the louvered vents. Ventilation System For mild outside temperatures when little heating or cooling is needed, use VENT (on the electronic touch system or manual operation on the Dual Automatic ComforTemp system) to direct outside air through your vehicle. Air will flow through the instrument panel outlets. If you have the optional rear passenger ComforTemp, you can adjust the direction of the airflow to the rear seating area. t Your vehicle's flow-through ventilation system supplies outside air into the vehicle while it's moving. While the vehicle is not moving, you can get outside air to flow through by selecting any air choice (except the rear window defogger) and any fan speed. 3-11