Guys, I have a noise coming from the drivers side back around the area in front of the back tire. It sounds like something vibrating against something else, like maybe the bottom of the truck bed. Does it going over bumps, not on a smooth road. I have been all under the truck checking everything I know to check. Thought it might be a rock on top of something, or maybe the spare tire, muffler hangers, shocks, basically every damn thing. Everything seems to be tight, and can't find any evidence of something thats been moving around. The noise is real loud and annoying. I then thought it might be the leaf spring bushings, but they look o.k.
Anyone out there had this problem before?

 

Does your body style have the interior moldings for the rear wheels?

 

If you're talking about the crome molding that goes around the wheel well, yes.

 

Check the bushings around the shock. Can you get it to make noise by standing in the bed and shaking it. Does it only do it while driving?

 

Tried shaking the bed sitting still. Can't get it to do it then. Seems like it does it while moving and on rough road. I'll check the shock bushings next.

 

will it do it idling?

 

No Argon, It's gotta be moving going over a bumpy road.

 

How about the fuel filler pipe or door?

 

Smoke has a point, my fuel door was loose because those little bump stops on the inside fell off. Check the u-bolts, one might be loose or broken.

 

No, guys, I already checked that too (the fuel door and pipe, and the u-bolts). They're all tight and not broken. The bottom leaf spring on that side is fanned out, but it's been that way for a long time. I thought that might have something to do with it, or maybe one of the plastic insulators that go between the springs was missing. As far as I can tell they are all ok. I noticed after driving it today that if I hit a bad bump or pothole, the sound changes to a high pitched "ting" like sound. But over bumps that aren't too bad, its a lower-pitched vibrating noise. It's so loud that I can't ignore it. Could this be something to do with the pinion bearing, or axles or something internal in the rearend?