Yes that is what Ram said I should do to fix the issue, slam the tailgate closed. They also said that my hitch is causing the back up sensors to go off. Then I pulled it off the truck to prove them wrong. So far a week in the shop and nothing done to fix any of the laundry list of issues. Tires are not causing the vibration between 50-60. During the time it has been in the shop, I have had two brand new Mopar vehicles that needed to go into service. Now I have been to the service center 4 times, twice has been for cars that are not even mine. One was a brand new durango the other a pacifica. At this point all I can do is laugh about this whole thing (and at myself for driving a mini van). Ramcares reached out to me on this forum, but no one from Ramcares has called me like they were supposed to.