2016 Canyon 3.6L Engine/Transmission Stumble

[Kilted]

Good morning Canyon and Colorado owners.  I have searched through this section regarding my issue and found a few posts similar to this issue but no definitive solution.

 

I now have 201,000 plus miles on my Canyon.  I have put every single mile on myself.  Up until two weeks ago the truck has been flawless.  On trip to South Carolina I noticed the engine/transmission would stumble, sometimes violently.  Tee engine has never stumbled to the point of dying. I took the truck to the dealer as soon as I could and they could find nothing.  Since then I have been paying attention to when the stumble occurs because it can be quite random.  Cold engine, warm engine seems to not matter.  What I have noticed though is that the stumble always occurs at or below 2000 RPM and usually when I have lifted my foot off the accelerator and then applied light pressure to re-accelerate.

 

Any insight you may have would be appreciated.