goose2

I have a 2015 Lariat w/the bigger ecoboost and 3.55 gears. What I have started to feel is a vibration when the motor shifts into a higher gear when just cruising city streets. As soon as it shifts the tach goes to 1100 or 1200 rpm and then the vibration. I think it mite be the exhaust drone causing it but I also wonder how that could cause the whole truck to vibrate. Mite just be the tranny slipping for al I know. truck has 1100 miles on it. Please help me if you can. I know its under warranty but would like to know if anybody else may have had this issue.
Thanks in advance.

lewissa81

Dude, the it's a 2015 with 1100 miles. Take it to the dealer and let them deal with it (pun intended). That's what the warranty is for...