Anyone have this problem...front end vibration? Feels like a busted shock toward the left side. Can feel it through both the steering wheel and accelerator pedal. Can feel every little bump now. Dealership can't seem to find anything loose. Started about 6 weeks ago. 2015 F150 4wd. 41,000 miles.
Thanks..

 

41k on the factory shocks might be the culprit. Factory shocks are cheap junk. Very possible they are worn out.

 

I may have found out, as the "symptoms" are just like what I experienced with my 2005 Chevrolet Z71. Feels the same, anyway.
Looked at the post on F150 recalls and found this: (My truck was delivered on April 1, 2015)

Recall Number: 15V279000
Recall Date: 05/12/2015
Attachment 397004
Component: STEERING
Problem Summary: Ford Motor Company (Ford) is recalling certain model year 2015 Ford F-150 trucks manufactured March 19, 2015, to March 30, 2015. The affected vehicles may have been built with a steering upper intermediate shaft that was improperly riveted.
Consequence: If the intermediate shaft was improperly riveted, it could separate from the intermediate shaft flex coupling, resulting in a loss of steering control and increasing the risk of a vehicle crash.
What Owners Should Do: Ford will notify owners, and dealers will inspect the intermediate shaft and replace it, as necessary, free of charge. The recall began on May 22, 2015. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 15S17.