Since the 2400 is diesel, I don't think it's an ignition problem... mostly because there is no ignition system. If the starter turns over and it doesn't start, then I suspect a fuel problem. Since you mentioned (I think) in the other post that it clicks, then I'd say maybe the starter is bad. If by click you really meant it does nothing, then I'd say it's one of the kill switches already mentioned.
At any rate, I 100% agree you should just call the dealer and have them fix it. It's new and, therefore, under warranty. In short, this is not your problem. It's the dealers problem.