It sounds like you may have major engine failure due to excessive overheating. You most likely have 1.0 hours in labor you owe the dealer currently. I would pay them, take my losses there, have the vehicle twoed to your home; and start researching quality shops in your area who will replace the engine with a good used one at approximatly 1/3 of the cost. If the van overheated badly there is a good chance the engine may have also taken damage, and to risk a repair might lead in future failure. You may even choose to find your own engine on the internet and ask if a local shop will do the work. From my experience in 10 years, I've replaced many engines with good used and had only 3, come back as bad engine's. If the shop doing the exchange is a quality shop, they will get the job done right, and even be able to tell how good of a engine the used one is.

-Rip