Rattle / Clank under bed

When the truck was on the group or up on a lift?

 

Meh, it's fine. Typical 3rd gen BS.

Seriously though. Good luck. Park it under a dead tree and pray for wind.

 

On the ground, and in the air. It does it regardless. Should have 0 movement on the bottom shock mount.

 

Mine does actually have some movement when bouncing the truck. Might be a bad bushing

 

Likely. It's pretty common.

 

I had a constant rear end clank like going over a speed bump etc. my issue turned out to be the top shock nut wasn’t tight enough. Possibly from the bushings wearing down. Tightened to nut and fixed it.

 

I found my clunking noise (actually the shop found it) - somehow the the Factor55 hitch-link pin got under the storage bin that is under the rear seat.

 

Problem solved yet OP?

 

Subd... I have the same problem on my 2nd gen and it's driving me nuts. I've checked most of the things listed so far, but am going to check the lower shock mount.

Curious to see what others find