I also got a misfire code(PO307),
My truck 2012 1500 5.7Hemi(71k mileage).
Vibration and losing power happens when pressing the gas hard during cruising.
I even put the shift to Manual(MDS-Off), same issue.
I tried a jack rabbit start, the powerful engine runs normal, no vibration at all.
Last August 2017, I drive the truck in conservative manner to Indiana from Florida (Back and Forth), it's all runs smooth unless I floored the gas especially when passing other car, no code because I release the gas immediately when 1st vibration felt. Running @ 70~90mph all the way.
Two weeks ago, I did not use the truck for 10 days due to family vacation(I am using a rental car).
When I came back, cold temperature killed my battery, jump start and drive the truck for almost 2 hours in Interstate then vibration comes back twice during that time(I floored the gas twice), 2 code PO307 recorded. I erase the code right after I replaced the battery,
Yesterday I drive again the truck for more than 4 hours in Interstate, same driving style to Indiana, same situation.
Doesn't make sense at all why is it this problem take place while cruising.
Isn't it that this problem included in Powertrain warranty?