Bought a new 2020 3500hd 8 months ago at 5,800 miles 2 weeks ago shifting went weird. Wasn't hitting the gears correctly felt as the truck was jumping between gears . Then a loud clanking sound from the tranny all within an hour of driving. Stopped and had to it towed to the dealer they told me yep tranny torque converter. They kinda put me in the dark about any other details. They said rebuilding its been 2 weeks in shop. Not comfortable with that rebuild since they said metal in fluid. So heading over to the dealer tomorrow not real happy about this.