2002 Buick LeSabre Owner's Manual - Page 201

Diversity Antenna System Your AM-FM antennas are located in the front windshield and rear window. Be sure that the inside surfaces of the front windshield and rear window are not scratched and that the lines on the glass are not damaged. If the inside surfaces are damaged, they could interfere with radio reception. Also, for proper radio reception, the antenna connectors at the top-center of the front and rear windows need to be properly attached to the posts on the glass. Do not apply aftermarket glass tinting. The metallic film in some tinting materials will interfere with or distort the incoming radio reception. If, when you turn on your rear window defogger, you hear static on your radio station, it could mean that a defogger grid line has been damaged. If this is true, the grid line must be repaired. If you choose to add an aftermarket cellular telephone to your vehicle, and the antenna needs to be attached to the glass, be sure that you do not damage the grid lines for the AM-FM antennas or place the cellular telephone antenna over the grid lines. Chime Level Adjustment The volume level of the vehicle's chimes can be controlled by the radio. To change the volume level, press and hold pushbutton 1 with the ignition on and the radio power off. The chime volume level will change from the soft level to loud, and LOd will be displayed on the radio. To change back to the soft level setting, press and hold pushbutton 1 again. The chime level will change from the loud level to soft, and Sf will be displayed. 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 and affect your radio's ability to pick up stations clearly. The repairs wouldn't be covered by your warranty. 3-44