just turned 20k on my 2017. Started making a rubbing metal sound on the interstate under light load at 70mph. Then it got worse and louder and then would make a loud thud going into tenth. It's been at dealership now for three days, still have not told me what it is- Iam thinking torque converter. Oh and that " slight evap leak" that been cleared out twice at oil changes by the tech. Asked them to actually fix it this time while its there, you know... for three weeks I bet. Other than that I love the truck.