Well first day I had no noise at all. Second day I put it in reverse and give it a little gas to back it off a hill, I had 2 clunks/pops from the drive shaft?? Diff area? now I have grinding on very low speeds like 5-10 mph when I'm rolling through like a Walmart parking lot and when I'm going 65-70 I get vibrations. Also when slowing down from 40 mph kinda fast it'll make a quick howl/err noise like as if I drove on those bumps on the side of a highway. They are very fast though as the truck shifts down. On acceleration between 40-50 Ill get a howl and if I kind of get on it ill get the same clunk as it did when I put it in reverse. after reading and researching I'm thinking maybe bad preload or overtightened something in the diff or my 2 piece drive shaft?

I did have the diff fluid replaced and according to the place I took it to it was a quart low. :confused: I'm gonna be pissed if it screwed up my gears.

 

Who did the work?

 

Shop did it.
Also the vibrations is off and on at other speeds.

 

This is why i do my own work.

 

I didn't know how and I was afraid of messing them up. Thanks for you helpful post

 

Take it back to the shop and make them fix it...

 

More then likely I will. They'll be open tomorrow. I'm just gonna get a note from the shop that changed my fluid so ill have something to go off of.

 

Good Luck!! Hope it's OK.

 

I do to