I have a 2018 XD 5.6 gasser. We were returning home from a trip a couple weeks ago and towing our travel trailer. We stopped to gas up and when we got back on the interstate the motor wouldn't rev over 2,000 RPM. We pulled off and turned the motor off and after a few minutes started back and had no more issues. The next time we filled up when I started the truck the motor sputtered when I started it. Turned the motor off and restarted after a few minutes and no more issues since this incident. I took it in to the dealer 2 days ago just to have it checked out and have a couple of minor issues taken care of and they are still not able to get it to throw a code. They just now told me they are pulling the transmission pan to check for shavings. I questioned this because the issue doesn't seem to be transmission related and they said they have to check it because we were towing a heavy load. It just doesn't seem right to me. Has anyone else experienced something like this and if so what was causing the issue?