A lift has nothing to do with the power train. Really what you have is the equivalent of a Moab.The dealer tried to make me pay for a fad actuator, but the service manager approved when I argued we didn’t touch it. But they said the power train warranty is gonzo
They can say all kinds of things, and refuse to cover stuff, but the law says they have to show that the modifications could reasonably have caused the problem.
The Jeep looks great.