Last month I had it at the dealer for the 4wd, dropped it off and reported a few other issues. After 15 days, a transfer case, front drive shaft replaced the truck was returned with the same issues. Since getting it back on the 26th, I now have a dummy light for the gas cap, a check engine light, still have issues with the 4wd and transmission.
Oh, I got a discount when I bought the truck, so getting them to buy it back, is a "much tougher process."