So I have a 2014 with 50k miles. The dealer wants to replace the Diesel Particulate Filter at my cost for $3800 saying that it's not covered under warranty. My truck says "Filter 100% Full See Dealer". Also, the electronic throttle control light is on. I have searched a lot (but you can't search for "DPF" because it's too short a word) and found where some email exchange between someone and the EPA occured, and the EPA claimed the DPF is required to be covered under the 8/80k mile warranty. Any updates on that? I don't know what to do.