My husband and I pulled our camper trailer and when we off loaded the camper trailer his truck would not move in drive or reverse and the message on the dash says “ service transmission set park brake to prevent from rolling “ . The towing capacity is 8,000 I believe and our camper trailer is 4,000 maybe closer to 5,000 with all our stuff in it. Anyone had this issue ?

 

I would suspect the computers are having issues controlling the shifting. No idea how it works on something that new...... Could try just restarting the truck.... see if that has any effect.

Moving to 5th Gen Ram section.