2008 Pontiac G8 Owner's Manual - Page 140

6-24 Infotainment FM Stereo FM signals only reach about 10 to 40 miles (16 to 65 km). Although the radio has a built-in electronic circuit that automatically works to reduce interference, some static can occur, especially around tall buildings or hills. Radio Reception Frequency interference and static can occur during normal radio reception if items such as cell phone chargers, vehicle convenience accessories, and external electronic devices are plugged into the accessory power outlet. If there is interference or static, unplug the item from the accessory power outlet. Fixed Mast Antenna The AM-FM antenna is located on the roof of the vehicle. Driving through an automatic car wash without removing the antenna could damage it. To remove the antenna, turn it counterclockwise. To replace the antenna, turn it clockwise until hand tightened. AM The range for most AM stations is greater than for FM, especially at night. The longer range can cause station frequencies to interfere with each other. For better radio reception, most AM radio stations boost the power levels during the day, and then reduce these levels during the night. Static can also occur when things like storms and power lines interfere with radio reception. When this happens, try reducing the treble on the radio.