GMC 2010 Yukon/Yukon XL Owner's Manual page 310

The audio system has been
calibrated for the vehicle from the factory. If Calibration
Error displays, it means that the radio has not been
configured properly for the vehicle and it must be
returned to your dealer for service.
This message displays when the
®
THEFTLOCK system has locked up the radio.
Take the vehicle to your dealer for service.
If any error occurs repeatedly or if an error cannot be
corrected, contact your dealer.
XM is a satellite radio service that is based in the
48 contiguous United States and 10 Canadian
provinces. XM Satellite Radio has a wide variety
of programming and commercial-free music,
coast-to-coast, and in digital-quality sound. A service
fee is required to receive the XM service. For more
information, contact XM at www.xmradio.com or call
1-800-929-2100 in the U.S. and www.xmradio.ca or
call 1-877-438-9677 in Canada.
See XM Radio Messages on page 4 113 later in this
section for further detail.
4-88
Do not add any label to a CD. It could get caught in the
CD or DVD player. If a CD is recorded on a personal
computer and a description label is needed, try labeling
the top of the recorded CD with a marking pen.
The use of CD lens cleaners for CDs is not advised,
due to the risk of contaminating the lens of the CD
optics with lubricants internal to the CD and DVD player
mechanism.
If an error displays, see CD Messages later in this
section.