My son in law has a 2018 Nissan Clipper (believe that is correct). Any way he was driving it and said it was hard to shift between gears and then it quit moving. I had him sit in the cab and shift between all the gears and it appears that it is shifting correctly at the linkage at the transmission. I had him move the transfer case lever back and forth and it also appears to be moving correctly at the transfer case. I took the plastic cover off at the side of the clutch housing and I can see the fingers on the clutch go back and forth when he pushes on the clutch. With the motor off you cannot move the truck if it is in gear and as soon as you put it in neutral you can move it. With the motor running it will not move in any gear and does not change rpms when letting the clutch out in gear. I tried 4 high, 4 low, and 2 high on transfer case and still does not move. drive shafts do not spin with it in gear and running. I search all over this site and could not find a similar situation. Does anyone have any clue what could cause this? I drove the truck recently and the clutch and gears seemed fine. I believe the truck has less than 200 miles on it.