2500 6.4 Liter Rear End Whine

[Moar Bob]

I have a 2016 2500 with 16K miles. Slight whine starting around 55MPH-60. Dealer told me they have to re-build and I'm heading up there now to talk with the technician. I tow a 6,000lb travel trailer and have logged around 4K miles in the tow mode. I used to race back in the day and had a similar whine in my 4:10 8 3/4 rear end but even though it's a heavy duty truck, I don't expect noise from either differential.

 

[Don_T]

I had a ‘14 2500 the had gear whine when accelerating, starting about 20 MPH and continued up to highway speed. I was a fairly loud. They made 2 attempts to rebuild it, then they replaced the rear axle assembly. That eliminated all the noise.

I now have a ‘18 3500 that whines when decelerating from 45 MPH down to 35 MPH. Two dealers say there is nothing wrong with it. I tow heavy and could use a taller gear so I am having an independent dealer change the 4.10 gears to 4.88 gears. They are replacing all the bearings too so maybe the noise will not be there when they are done.

 

[garysol1]

Just to update. I had a rear diff rebuild in my 2017 and it has helped the whine a bit but it is slowly getting as loud as it used to be. I am just going to live with it and chalk it up to being a truck.

 

[ronheater70]

I test drove 5 HD series trucks, if you include mine in there that makes 6.. Of the 6, only 2 of them had a quiet rear end.. A 2017 used 3500 with 30K or so on it, and the new one I bought. of the other 2 new ones, one was slightly noticeable with 12 miles on the odometer, and another one was downright loud, as in the salesman had a shocked look on his face loud. I don't know what it is with Ram and their rear diffs, but they either have a manufacturing flaw, or an assembly flaw. there should be no noise in a rear diff. period end of story. I dont know how they can say one that makes noise, is "normal", because what about the quiet ones out there, I suppose all of them have issues then because they dont make noise. you can't have it both ways.