I have a 2016 3.5 ecoboost super crew lariat. Living in Canada now that the temperature is below 0 degrees Celsius. Daily when I start my truck in the morning or after it has sat for a couple hours i still use command start or let it run a few minutes before driving. The truck drives smooth in first gear, smooth shift to second and then it has such a rough shift into 3rd gear. After that first rough shift into third i can come to a stop and accelerate again and its smooth shifting through every gear for the rest of my commute. I only have that one rough shift into 3rd gear at the beginning of every drive when the trans is cold.. Anyone else have this issue?

 

Boosted, I am having a similar problem. Have you made any head way on this? I only started noticing it after the TSB was done for the slipping drive shaft (shims and lube).