Not to change the subject here but IDK where you go to your auctions but NYS Police Tahoes do not go for less than 4k on a bad day. And to answer your questions MOST are 2WD BUT they also have 4WD which are usually located in the rural areas they patrol. If you are look at ANY GM fullsize pick up/blazer if the 5th digit in the vin is a K its 4WD