2011 Dodge Caravan with 112k miles, starts sounding like my cummins dually when the AC is on. I check all the idlers and such, they all look good, sound is louder near the bellhousing. I pull off the inspection cover and it is so loud I'm afraid to put my head near the opening. Crack and a piece missing out of the flex plate visible from the inspection port...turns out this is a common problem. $550 later (would have been close to $1k at the dealer, and no way was I going to do this on my back, book says 5 to 8 hour job) I get my part. The shop said the replacement was thicker. This steel feels weird, hard to explain, I'm no metallurgical analyst, but WTF? The only thing that kept it in place axially was a large spacer that the crank bolts went thru, otherwise the small chunk (I put it back in the hole, hard to see in the pic) might have did some major damage. Bottom line is make an inspection of this part a regular thing to do when changing the oil, and take a look before your powertrain warranty expires. Just had a customer stop by with a 2015 who had his replaced at 62k mi. Jeeps and others with this same motor can have the same problem.