2012 GMC Acadia Owner's Manual - Page 192

7-12 Infotainment System XM Radio ID: If tuned to channel 0, this message alternates with the XM Radio eight‐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 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. No Information: No text or informational messages are available at this time on this channel. The system is working properly. No Subscription Please Renew: XM subscription needs to be reactivated. Contact XM at www.xmradio.com or 1-800-929-2100 in the U.S., and www.xmradio.ca or 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. 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. FM FM signals only reach about 16 to 65 km (10 to 40 mi). 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, causing the sound to fade in and out.