If you check the OEM parts websites, you'll see that several transmission part numbers changed when they fixed the 'ghost shifting' problem in 2015. They did this on all the Wings. It's been a while since I've looked, but as I remember the 4th and 5th gearsets had different dogs to improve engagement. Some other parts may have changed too.
Interestingly, my 2013 never had a shifting problem. But my 2016 had a 'false neutral' between 4th and 5th twice when it was new. Either the problem disappeared with mileage, or my shifting technique improved.
Reply With Quote