Murphys74

I have a 2013 F150. V-8, Approx 22000mi. I notice a stutter in the engine or what feels like a slip in rear end. Cannot quite tell which. Does not matter up hill, down hill or flat. It will sometimes do this a few times in a row then forever go without doing it. I want to say it mainly happens in cruise control but every once in a blue moon it happens with foot on gas. Had it in to local dealer they say computer shows nothing. And of course with mechanic riding along you can't predict when it will happen. Anyone else have this issue?