Well lets start with my clunk. I got a 2003 4x4 cc srw s/bed. When driving and i let off the gas then hit it again i get a clunk under my seat area or so i think. Any ideas ? Also while driving about 55-65 i have a vibration then it goes away at 70-80 or so. Then the 2nd vibration my engine seems to be vibrating more than normal i can feel it in th steering wheel and i could't before. thanks

 

Does the vibration occur when you're just sitting there in park, or only when you are driving?

 

In park and driving its in the steering wheel i can feel it in park and driving.

 

I just stumbled on your post. I have the same problem with 2003 3500HD 4x4 Qcab long bed. The dealer says they dont see any thing wrong,but the shake thru my steering wheel feels like my Harley's handlebars.So they dont plan to do anything about it. However the tech gave me some print out of checking drive shaft angles. I believe it is in the engine harmonics,my last dodge did not have this problem.No more warantee,maybe no more Dodge!