XM Messages
XL (Explicit Language Channels): These channels, or any others, can be blocked by request, by calling 1-800-929-2100 in the U.S. and 1-877-438-9677 in Canada.
XM Updating: The encryption code in the receiver is being updated, no action is required. This process should take no longer than 30 seconds.
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 Unavailable: This previously assigned channel is no longer assigned. Tune to another station.
No Artist Info: The system is working properly. No artist information is available at this time on this channel.
No Title Info: The system is working properly. No song title information is available at this time on this channel.
No CAT Info: The system is working properly. No category information is available at this time on this channel.
No Information: The system is working properly. No text or informational messages are available at this time on this channel.
No Subscription Please Renew: The 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.
No XM Signal: The system is working properly. The vehicle may be in a location where the XM signal is being blocked. When the vehicle is moved into an open area, the signal should return.
CAT Not Found: The system is working properly. There are no channels available for the selected category.
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 Antenna: 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.
See also:
Online Owner Center
Manage your vehicle (U.S.) at gmc.com. Click on “Owners,” then “Manage My GMC/Owners Login.”
Information and services customized for your specific vehicle — all in one convenient place.
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Error Messages
If Disc Error displays and/or the disc comes out, it could be for one of the
following reasons:
○ The disc has an invalid or unknown format.
○ The disc is very hot. Try the disc again ...
Tips and Troubleshooting Chart
Problem
Recommended Action
There is no power.
The ignition might not be turned to ON/RUN or ACC/ ACCESSORY.
The picture does not fill the screen. There are black bor ...





