Rear end whining

[Chrismb5.7]

So there's been a whining noise coming from my rear end that has gotten worse over the last year and as of today its loud enough to concern me. Could this be the pinion bearing in the rear diff? I've read these are a common issue. Truck is a 2004 1500 2wd with 3.55 rear. Thanks for any help.

 

[pacofortacos]

It could be.

 

[Chrismb5.7]

I changed my tire size from I believe 30's to 32.5's around 8 months ago also. Would that have caused wear faster? It was whining before the change but not near as loud.

 

[DodgeLady]

I had a bad rear end whine. Some said tire noise, some brakes, some rear bearings...
I found a Chrysler master tech that drove the truck two blocks and said “rear bearing” as in pinion bearing.
My truck had 316k miles so he went ahead and replaced the whole rear axle. Truck has been running and sounding great!



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[Karlsweg]

Pinion bearing for the win Alex!