The personalization is stored in the BCM (Body Control Module). I'm not sure if this module holdes the VATS or not in it but I do not think so as we tripped the VATS while doing pcm work. They may have just done both PCM and BCM upgrades in which case you would have lost any custom pcm programming.
yeah i have the same problem with the ervice theft system also. It only seems to do it when it is cold and my cars is idling and i lock the doors. i also found that if you click through the differant screens on the display it will go away. Is there anyway to fix this. please let me know.