I currently own a '00 Seville SLS with 56k miles which is leaking antifreeze again from the same area. Have had my waterpump replaced 2x and believe this will be number 3 in less than a year. Test driving a 04 DHS today with 70k miles and my buddy who's sales manager at local Caddy dealer can get to me for $10k. I pulled the codes which all but one have history behind the code #. Only one says current. The old ones are mostly B1327(voltage system less than 9.0 volts) but the current code is RCC u1000? It does have remaining factory warranty which isn't long. Should I avoid this car and stick to my current one?