2009 GMC Canyon Owner's Manual - Page 187

XM Radio Messages XL (Explicit Language Channels): These channels, or any others, can be blocked at a customer's request, by calling 1-800-852-XMXM (9696). Updating: The encryption code in the receiver is being updated, and no action is required. This process should take no longer than 30 seconds. No Signl: The system is functioning correctly, but the vehicle is in a location that is blocking the XM signal. When the vehicle is moved into an open area, the signal should return. Loading: The radio system is acquiring and processing audio and text data. No action is needed. This message should disappear shortly. Off Air: This channel is not currently in service. Tune to another channel. CH Unavl: This previously assigned channel is no longer assigned. Tune to another station. If this station was one of the presets, choose another station for that preset button. Unauth: This channel is blocked or cannot be received with your XM Subscription package. No Info: No artist, song title, category, or text information is available at this time on this channel. The system is working properly. NotFound: No artist, song title, category, or text information is available at this time on this channel. The system is working properly. XM Lock: The XM receiver in your 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 your vehicle serviced, check with your dealer/retailer. Radio ID: If this message is received when tuned to channel 0, there could be a receiver fault. Consult with your dealer/retailer. Unknown: If this message is received when tuned to channel 0, there could be a receiver fault. Consult with your dealer/retailer. Check XM: If this message does not clear within a short period of time, the receiver could have a fault. Consult with your dealer/retailer. 3-59