2008 Buick Lucerne Owner's Manual - Page 232

XM TheftLocked: The XM receiver in the vehicle could have previously been in another vehicle. For security purposes, XM™ receivers cannot be swapped between vehicles. If this message appears after having your vehicle serviced, check with your dealer/retailer. 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/retailer. Check XM Receivr: If this message does not clear within a short period of time, the receiver could have a fault. Consult with your dealer/retailer. 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/retailer. Navigation/Radio System Your vehicle may have a navigation radio system. The navigation system has built-in features intended to minimize driver distraction. Technology alone, no matter how advanced, can never replace your own judgment. See the Navigation System manual for some tips to help you reduce distractions while driving. Theft-Deterrent Feature THEFTLOCK® is designed to discourage theft of your vehicle's radio. It works by using a secret code to disable all radio functions when battery power is removed and the radio is placed in a different vehicle. This feature requires no user input to be activated. The radio is automatically armed when it is put into the vehicle for the first time. If THEFTLOCK is activated, the radio does not operate if stolen. The radio displays LOCKED. If this occurs, the radio needs to be returned to your dealer/retailer. 3-94