My 09 has a problem when I stop and go,kinda feel's like when motor mounts start to go but I don't think it's that.
At first I thought the sit was sliding or loose but I saw nothing wrong there.
Thought maybe someone else may have had the same problem.
In a few weeks I'm do for service and thought I could find out before I go there.
THANKS

 

i would say its a possible torque converter problem

 

torque converter with only 9,000 miles on it I guess it's possible ,my last truck 99 150 had a tc problem but the syptoms were a vibration in third gear,I think it was called the shudder problem.It's under warranty so hopefully they will no what to do.
THANKS

 

If it were an engine mount, surely the cooling fan would be hitting the shroud. From your desciption it does sound more likely to be a problem to do with the transmission.

 

well keep us posted on the fix it still it might be a torque converter bump when you stop.