I have a '09 v8. I a few engines & several transmissions in my '09 before it hit 70k. This is with a car that I only let the dealership service. I never once had a check engine light come on. I took it in because it jumped when I started it so I had the dealership check it out, and figured it was almost time for a oil change so they might as well do that while they had it. Smh metal in the oil and needed a new tran. Got it back, it didn't feel right. Had a friend put a shop scanner on it and it hit on the same issues again. I say all that to say, if you haven't already it might be worth it to have a dealership look at it. Or take it to a shop that has the ability to run a full system diagnostic scan and see if it hits on anything.
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