We have many V owners here eager to help new members with GM-specific VIN information.
Although it is not in our rules, said members generally provide that information
only to supporting members. Should you ask for a VIN check you may or may not receive it, but helping support the forum certainly makes your request a higher priority. Support info here:
http://www.cadillacforums.com/subscribe.html 
Enjoy the site and your (potential) new rides.