If I were to buy a ODBII code reader on Ebay like http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=2480281816&category=43989 , would it work for my 98. 5 2500?? Or would I have to buy a more elaborate one?? Do we have the generic plug in?? Or do we have to buy a specialized adapter? 36 bucks doesnt seem too bad for a code reader. Thanks!!!!