2011 Chevrolet Impala Owner's Manual - Page 185

Infotainment System No Subscription Please Renew: XM subscription needs to be reactivated. Contact XM at www.xmradio.com or call 1-800-929-2100 in the U.S. and www.xmradio.ca or call 1-877-438-9677 in Canada. CAT Not Found: There are no channels available for the selected category. The system is working properly. XM Theftlocked: The XM receiver in the vehicle could have previously been in another vehicle. For security purposes, XM receivers cannot be swapped between vehicles. If this message is received after having the vehicle serviced, check with your dealer. XM Radio ID: If tuned to channel 0, this message alternates with the XM Radio 8 digit radio ID label. This label is needed to activate the service. Unknown: If this message is received when tuned to channel 0, there could be a receiver fault. Consult with your dealer. Check Antenna: If this message does not clear within a short period of time, the receiver or antenna could have a fault. Consult with your dealer. Check XM Receivr: If this message does not clear within a short period of time, the receiver could have a fault. Consult with your dealer. XM Not Available: If this message does not clear within a short period of time, the receiver could have a fault. Consult with your dealer. 7-13 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. 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.