Chevrolet 2003 Tahoe Owner's Manual page 244

XMTM Radio Messages (cont'd)
Radio Display
Message
Condition Action Required
No Info
XM Locked Theft lock active The XM receiver in your vehicle may have previously been
in another vehicle. For security purposes, XM receivers
cannot be swapped between vehicles. If you receive this
message after having your vehicle serviced, check with the
servicing facility.
Radio ID Radio ID label
(channel 0)
If you tune to channel 0, you will see this message
alternating with your XM Radio 8 digit radio ID label. This
label is needed to activate your service.
Unknown io ID not known If you receive this message when you tune to channel 0,
you may have a receiver fault. Consult with your dealer.
eiver may have a fault. Consult with your retail
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