I have an 02' Ram 1500 5.9L, 130,000+ miles on it, and when i start goin kinda fast, around 50, I hear this kind of whining noise coming from behind me, in the rear end im guessing. The only way i can think to describe it is that it sounds like someone holding down their horn, except it is much quieter, thank god haha i justhad the U-joints replaced, and the tires blananced....twice. what should i look into? axles? diff? bearings?

 

Almost sounds like the sound i had in a 03 5.9 and it would shake the rear end too , hopefully its not the same in your case couse we had to rebuild the tranny .Good luck

 

how bad was the shake in your truck?? because mine used to shake quite a bit, but like i said, i replaced the u-joints and that shaking went away, but i guess there is still a tiny bit of shaking...so little that its kinda hard to tell if its just the road, or my truck. thanks for the help

 

I would look into your diff being bad. I had a Ford F-150 that had the same problem and it turned out to be the diff.

 

could be the bearings. but those make a humming noise. need more info. have someone drive by you and figure out which side it might be on or if its in the diff