I just started to notice at about 5400 miles. I have the 2015 SXT Plus with the 8 speed auto. The transmission feels and hears like it is slipping coming out of 2nd and 3rd. I can sometimes tell there is hesitation in the power too. Any ideas? Will I need to take this to the dealer? Has anyone had any transmission issues with the 2015's new 8 speed yet? Thanks in advance.