Bed squeak after installing bed stiffeners

I recently added total chaos bed stiffeners to my Tacoma and almost immediately induced a high pitched squeak that can only be heard while driving. I tried to bounce on the bumper, but the squeak only occurs while the truck is moving. I can only think it has to do with the bed bolts that were removed and reinstalled? Has anyone had the same problem, and if so, how did you fix it?

 

Bump

 

https://www.tacomaworld.com/threads/tacoma-loose-bed-design-flaw-explanation.388873/

 

Make sure your bolts aren't loose. I installed mine long ago and have no issues but as mentioned above me you my have issues at the actual bed retaining bolts.

 

Thanks everyone. Bolt bushings was not the issue. Carrier bearing went bad as well as u joints. No more squeaks!