I have a 2011 F150 ecoboost supercrew 6.5 ft bed. I have noticed a bad vibration/ grinding in the driveline, mainly after a long trip on the highway and coming to a stop and starting again. And it's noticeable at lower speeds. Any ideas as to what this may be caused by. It seems like the rearend is binding but I have had the rearend checked and the level was good. Any help is appreciated

 

Mine is in the shop now with a similar issue. my truck was making a strange noise and vibration the first 2 turns of the day. After that it would be fine till the next day; it turned out to be the clutch pack in the limited-slip dif. I don't have the truck back yet. Hopefully tomorrow; Still waiting on the part. I have 39,XXX miles so its covered by the power train warranty.

I think your truck may have the 2 piece drive shaft. I'm surmising that due to the screw with the 6.5' bed. They can be fussy sometimes I've read.

I hope they figure it out for you.

 

Yes mine has the 2 piece shaft. I have the what seems to be typical shudder at take off, but that grinding is what is killer. I turned my.truck around in the yard and it sounded like it was grinding the entire time.