Cadillac 2007 CTS Owner's Manual page 280

Radio Display Message
No Info
NotFound
No Info
XM Lock
Radio ID
Unknown
Check XM
280
Condition
Category Name not
available
No channel available for
the chosen category
No Text/Informational
message available
Theft lock active
Radio ID label (channel 0) If tuned to channel 0, this message will alternate with the
Radio ID not known
(should only be if
hardware failure)
Hardware failure
Action Required
No category information is available at this time on this
channel. The system is working properly.
There are no channels available for the selected category.
The system is working properly.
No text or informational messages are available at this time
on this channel. The system is working properly.
The XM™ receiver in your vehicle may 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 GM dealer.
XM Radio 8 digit radio ID label. This label is needed to
activate the service.
If this message is received when tuned to channel 0, there
may be a receiver fault. Consult with your GM dealer.
If this message does not clear within a short period of time,
the receiver may have a fault. Consult with your GM dealer.