I posted a note yesterday for advice on removing a turbo from a 2013, now I wonder if I am chasing the right rabbit. I get the P003A error occasionally. My truck still runs pretty well when pulling a gooseneck with about 8000lbs, and when hauling a ~2000lb slide-in camper up hills in a head wind. I do notice a slight drop-off in mileage, and the engine brake doesn't appear to work. I had noticed a significant growl in the turbo when I would turn off my truck, but I don't hear that any more. The local dealer tried to do a relearn and said my turbo actuator will not go below 75%. Can this be as simple as replacing the actuator? They thought the turbo was likely gunked up and the vanes stuck. I had begun taking out the turbo to examine/repair/and/or replace and am to the point of removing the up and down pipes which looks very difficult, and maybe impossible on a 2013 w/o removing the cab or pulling the engine or dropping the tranny. I can't find clear info on removing this turbo for this specific truck. Would be easy to check the actuator at this point. Any advice?