I have done some searching on this website, as well as others, and nobody has come up with a solution. I notice that the bed of my truck (2011 Lariat 2wd SuperCrew) bounces a good bit when going over rough roads and bumps. It isn't the shocks, as those have all been replaced recently. It is clearly the bed bouncing. I checked the bolts and all are tight. Any ideas as to what it could be? Thanks in advance.

 

Add some weight to the bed if you haven't already, this helped with my trucks bed bounce.

 

Surprised you missed all the threads with people saying to check the tailgate.

 

Adding weight will help but it's the nature of the boxed frame design.

 

A bit late to this but just adding my 2c in case anyone else sees it...

I noticed mine does it too so I started watching other trucks on the road and almost every F150 I've seen does this.

I call it "Wiggly Bed Syndrome."
As far as I can tell its normal.

 

i upgraded to 5100s and added the hellwig rear sway bar and it is practically eliminated.

 

@nineball : Hello, I am trying to get rid of bed-bounce in my 2013 F-150 Supercrew. The bed seems "loose" even though all bed bolts have been checked. My truck bed shakes when hitting even the slightest of bumps (even the tar lines where the road has been crack-sealed). It also happens at any speed. As long as the road is completely smooth, it rides great - even at 75mph. Saw where you installed a sway bar and it fixed your situation. Wanted to see if your problem was similar to mine. Any help you can provide would be greatly appreciated. This thing is driving me nuts!
Thanks.