Pulling codes p0751 p2700

[Jsaud]

Was hauling my camper on tow/haul When The tow/haul started flashing. I stopped and restarted my truck. The tow/haul no longer flashes but I'm pulling codes p0751 and p2700. Any ideas of the problem? The shop I took it too says its all internal but they don't rebuild or work on diesels much so I want to get other opinions on the matter. Any help is great.

My truck is a 06 f250 with 85k miles. Running with a sct programmer with a pre-set tune. It still runs perfectly fine. Don't trust hauling though until I get it figured out. Thanks.

[goose5]

You've probably got a leaking coast clutch piston.