Guys while my truck is empty I have a little pop (thump) coming from the rear of the truck when I hit a bump. When I am loaded the noise is worse and more definite on a rough road. It sounds like a broken shock or something really loose. I have looked at everything from the shocks, fuel tank, springs, bumper etc. and can't find anything wrong. Do all Mega Cabs have this noise or do I need to keep looking? This is the first truck I've had in a couple of years that has the factory overloads could they be causing this, but that really doesn't sound right because while I loaded it does it to.

 

I haven't heard it in my mega cab.. Have you checked to make sure your spare tire is tight up against the bed? maybe that just a little loose and banging around.

 

is it the baby seat? or the stroller loose in the bed? or your book bag? just kidding.

 

is it the baby seat? or the stroller loose in the bed? or your book bag? just kidding.

 

That was the first thing I checked.

 

Sorry man, mine is quiet for now......

 

trailer hitch

 

I drove around 1/2 a day recently wondering what the noise was and had forgot that I left the trailer hitch in after setting it up for its first tow...

 

Wow.... I just realized I'm an idiot. I have been wondering what the noise in the back over bumps was, and that totally makes sense.... now.

 

No hitch in the receiver, I just use a goose neck.

 

Does the Mega have the fold out floors under the rear seat?
I know it sounds crazy but I had the same exact noise you describe and it was the stinkin' fold out floor not being secured via the little snap bungee thingy. It was LOUD if I hit a bump just right,it would raise up and then slap back down. I swore it was coming from under the truck,it took me over a week to figure it out!

 

No the Mega Cab does not have them and I know for a fact the noise is coming from under the truck.

Thanks for the post though.

 

I thought I read post somewhere that a guy found a loose shock bolt or something in the rear. When the suspension unloaded, it would thump.

I have eliminated the hitch as my problem as well. Seems we are on the hunt for the same thing... and I tightened up my spare a long time ago.

 

I finally had the time to mess with the truck and the noise is the overloads hitting. When I put my airbags on this weekend it should take care of the problem. Thanks for all of yalls thoughts on this.

 

I have the same noise as you guys... If I go over a good bump etc you can definately hear it....

Im going to check the spare tire on mine, and the rear seat flap.. I tought it sounded like it was comign from the rear suspension area, and it could be the same problem that dodge4x4 is having..