humbodtscrew

i have an 04 screw and when i drive my truck on the freeway the bed shakes bad and i cant figure out what is causing it any one else have this problem

FX4Nick

Wheels/tired out of balance? cupped Tires? Worn Shocks? Bent Rim?

That's all I can think of

humbodtscrew

no checked all that i thought there was a thread on this topic before and i cant find it thanks

behindredeyes

My 06 screw 4x4 does the same. I can't feel it shaking by when I look in the mirror I can see it shaking back there. It looks like the one corner of the box is loose but I can lift up on all 4 corners of the box and nothing seems loose. Not sure what this is all about?

paulj

My truck does that too. I know that there was a vibration dampener thing they put under the driver's side to stop some bed vibration.

Another thing that happened to my truck was the caliper on the rear passenger side slowly locked up it caused a crazy shudder for a while on the highway and then locked up altoghther.

GATORB8

The consensus from the old thread was that they all do it when the bed is unloaded.

humbodtscrew

thanks gator i thought i had seen another thread at one time

snopro31

do you drive on gravel or dirt roads?

if yes clean the rims out with a pressure washer. mine shakes after it rains cause of the clay/gravel/dirt roads I drive on. clean the rims out and its smooth.

Mod (Ret.)

Is it at all speeds above 55 for example? Just a certain range? Does the cab bounce too?

If the cab bounces as well as the bed, and your absolutely sure that you do not have one wheel out of balance, then check your suspension. I've had tires that I'd go back for balancing 2 or 3 times, only to get the same bounce at a certain speed. I would change manufacturers (once the tires wore out), and the bounce stopped.

What tire are you running with?

Recently, I had a bounce at 65 to about 73, then it would smooth out. Ended up being a blown strut on the left front; oil on the strut. Changed both front struts, bounce gone.

It can be many things; if the suspension is good, tires balanced, then I'd guess at the brand of tire. Got a friend that would let you swap wheels/tires for a day? That would narrow the field down.

humbodtscrew

no i dont on dirt roads regularly and it is just the bed i checked for an out of round tire and an out of balance tire i work at a tire shop and it isnt anything in the suspenshion either i agree with gator these trucks just do it