Why oh why do people buy vehicles from several states away sight unseen?
You bought a 12 year old truck "As is" from a dealer across the country without checking it out first. I sincerely hope it ends up serving you well after you pay to repair your truck. Expecting the seller to pay for a repair from your Toyota dealer (probably the highest price alternative around) is not realistic.
While I feel bad for your situation, I really have no understanding on why someone would buy a 12 year old truck from NY, when they live in Colorado, without having a professional mechanic do a pre sale inspection first?
No one would ever buy from a local classified ad in the newspaper without looking the vehicle over very carefully and test driving it, but for some foolish reason they think it is OK to buy one from the other side of the country based on some internet description. There must be hundreds of similar trucks for sale in your area; why not buy something local?
One other thing I don't understand. If this incident occurred in Feb., 2007, why are you writing about it now? Is your truck still sitting in South Dakota waiting for repair after all this time? Why no more recent updates on the situation?