I have a 2003 dodge ram 2500, 5.7 liter engine. I recently had it at the dealer to have the front and rear pinion seals changed, along with the rear transmission seal. Ever since I brought it home it has this weird vibration, I took it back to the dealer 3 times, they kept saying there is nothing wrong, but its still there. It only happens at low rpm, when I lightly touch the gas, as if I am trying to stay at a constant speed. It gets worse the faster I go. I can feel it under the truck, I looked it all over, nothing looks wrong. Ujoints seem fine. It also makes a different noise if I go down a hill and I am not touching the gas. Any ideas?????

 

moe in wichita ks
not to be a wise guy but ill beat a needle fell onto the end of the cross. putting the cross off center just a little. just my .02