2002 Pontiac Bonneville Owner's Manual - Page 183

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 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. Ventilation System For mild outside temperatures when little heating or cooling is needed, use the vent setting (on the standard system) to direct outside air through your vehicle. Air will flow through the instrument panel outlets. 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 delivery mode and any fan speed. Your vehicle has air outlets that allow you to adjust the direction and amount of airflow inside the vehicle. Move the knob in the center of each outlet up, down or side-to-side to direct the air from the outlet. Use the thumbwheel in the center to shut the outlet off. For the most efficient airflow and temperature control, keep the shut off door in the fully opened position. 3-9