Wow, funny this is at the top of the "Recent Discussions" list.
Yesterday morning, our 2015 2.3 Reserve had a rough day. My wife backed it out of the driveway as she normally does and put it in Drive. She felt big THUD and bang sound. Then the car would barely move on it's own power. She barely got it in the driveway and took my car to work. When I got home, I took it for a drive.
First, I checked for codes, none were stored. Then I took it for a drive. Wow, the range of noises, feeling and symptoms was crazy. They ranged from full on power loss, to shudder, RPM Surging, to slipping and finally slipping then like I neutral dropped it. Even sitting at idle it felt fine, then BAM the whole car shook with a THUD and RPMs bounced from 1500 to almost stalling.
I dropped it off at the dealer last night and awaiting diagnosis.
No CEL, no Wrench.
This is the only thread where I've found a failure of the transmission. I found the TSB for the Torque Converter (which this definitely feels like a failing TC), but that's not for a failure, but a noise on 2nd and 3rd shift.
It only has 30K on it.
Thank goodness for an extended warranty, as you know Dealer's find ways not to cover things under the Powertrain warranty.