Radio Messages
CAL (Calibrate): The audio system has been calibrated
for your vehicle from the factory. If CAL appears on
the display, it means that the radio has not been
configured properly for the vehicle and must be
returned to your GM dealer for service.
LOCKED: This message is displayed when the
THEFTLOCK
®
system has locked up. Return your
vehicle to your GM dealer for service.
If any error occurs repeatedly or if an error cannot be
corrected, contact your GM dealer.
XM™ Radio Messages
Radio Display
Message
Condition Action Required
XL (Explicit Language
Channels)
XL on the radio display,
after the channel name,
indicates content with
explicit language.
These channels, or any others, can be blocked at a
customer’s request, by calling 1-800-852-XMXM (9696).
Updating Updating
encryption code
The encryption code in the receiver is being updated, and
no action is required. This process should take no longer
than 30 seconds.
No Signal Loss of signal The system is functioning correctly, but the vehicle is in a
location that is blocking the XM signal. When you move into
an open area, the signal should return.
Loading XM Acquiring channel audio
(after 4 second delay)
The audio system is acquiring and processing audio and
text data. No action is needed. This message should
disappear shortly.
CH Off Air Channel not in service This channel is not currently in service. Tune to another
channel.
CH Unavail Channel no longer
available
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.
3-93
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