2010 Buick Lucerne Owner's Manual - Page 252

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). XM 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 XM Signal: 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 XM: The audio system is acquiring and processing audio and text data. No action is needed. This message should disappear shortly. Channel Off Air: This channel is not currently in service. Tune in to another channel. Channel Unauth: This channel is blocked or cannot be received with your XM Subscription package. Channel Unavail: 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. No Artist Info: No artist information is available at this time on this channel. The system is working properly. No Title Info: No song title information is available at this time on this channel. The system is working properly. No CAT Info: No category information is available at this time on this channel. The system is working properly. No Information: No text or informational messages are available at this time on this channel. The system is working properly. CAT Not Found: There are no channels available for the selected category. The system is working properly. 4-92