Grinding / vibration sound

Grease the universal joints and see if it changes.

 

Why not take the truck in to a professional transmission shop for a FREE road test . Those guys diagnose this stuff all day and everyday . Road tests are free .

Your post started back in September and its now Novemeber . Are you any closer to figuring out what the issue is ?

 

greased everything last night, and got a smoother ride, but the sound is still consistent. every time i pass 1600 RPM's, i get this strange buzz/ratttle/grinding noise from under the passenger side. It sounds like it should be a heat shield, but spent an hour under the truck last night and couldnt find anything loose. I replaced the drivers side wheel bearing a couple weeks ago, and everything went smooth. Put 600 miles on it without a problem since then, so i dont think its related, and its on the other side of the truck, but figured i would mention it.

 

I did PM the original guy who started the thread, and his ended up being a loose bolt on a heat shield. I was only looking for missing or broken ones last night, so ill try tightening them all down tonight, hope i get lucky.

 

Were you lucky?

 

I must have the same loose heat shield as OP. I have similar noises, but just had my passenger front end replaced after a collision so I don't think it's wheel bearings in my case

 

total mileage on truck ??????

 

Seems like a rather old thread I revived. I believe OP sorted his issue. My truck has 160,000 mi