I had my '16 2500 in for several warranty items. One was for getting a service trailer brake, along with stabilitrak, and abs. Before I went on my last trip, they replaced part of the trailer plug on the truck. After a long trip (7K miles), and lots of warnings, took it back to the dealer. They replaced the whole trailer plug (didn't know it was two parts), saying they were getting weird reading, and just replaced the whole thing. Had a sticking caliper also. I will be pulling my trailer a short distance next week, so we will see.