Has anyone experienced this? I get it when the fuel tank is about 3/4 full. I think the fuel sloshes when moving slow in stop and go. or stopped and backing up. It produces a thump like someone hit you from behind. Feel it directly in the back of the driver's seat. Almost sounds like there is something thumping around in the bed.

Wave action is all I can think of?

I have been tracking the noise for a while it only happens when the fuel tank is around 3/4 full.

Any help is greatly appreciated.

This is the 2011 forum - should you be in a different one ??

Opps. That was a mistake..

I got all excited for nothing! :banghead: I actually thought someone had an LmL already. Oh well