One of the beautiful parts of having a Lifetime Warranty is I don't know or care why it failed.... for all I know the squirrels inside got tired and needed to be fed

Just kidding... of course I care and am interested.
I know after the second rebuild it was still going into limp mode so they replaced the valve body. I'm not sure why they didn't start with that since it seems that is one of the many weak points.
First failure the "valve body accumulator plate" failed and shot metal all through the tranny and cooler. It was totally tore up by the time I drove it off the freeway and got to a safe place. From reading the invoice all the inside clutches and steels were replaced along with the cooler.
Funny aside.... I have a Jeep Cherokee as one of my company delivery vehicles and got a call from my employee today that the engine was revving up and down and the vehicle was barely moving. Got him to limp it to the dealer and I went and met him. 61K miles, 2 years old and the tranny is toast. These FCA trannies sure aren't like to the old Maytag Man

I guess they built it just good enough to get past the 60K powertrain warranty. Luckily I bought another extended warranty.
I can't imagine the bean counters that price those warranties are too happy with me. I'm +/- $3500 paid for mine on two vehicles and will be well over 20K in benefit. I suppose my experience is not typical but I'm sure glad I bought them.