why does my 2.4L buck slightly on highways between 70-75 mph on 2008 Chrysler Sebring

Highway driving when vehicle is between 70-75 mph

Asked by for the 2008 Chrysler Sebring
Possible enging misfire, light on?
No, there are no lights on saying there is a problem
1 more answer , 1 more comment
does it buck at slower speeeds going uphill?
Yes, it does buck going up hill as well, typically only at a higher speed though.