1500 02' 4.7 high pitch whirring noise louder faster - still hear it when coasting in N - wheel differential?

[WolfeRam]

thinking wheel differential or just the pinion bearings? it sounds like coming from underneath almost center. gets louder the faster you go, not only on acceleration, also when coasting, still when braking, it's basically based off just how fast you are going which seems certain it's a bearing, at least not transmission based.

anyone had experience with replacing this? what should cost be to get it fixed?

thanks

 

[WolfeRam]

*it's pretty loud - like annoyingly loud - and it's a consistent sound like you'd hear with tires - louder the faster you go aka the faster a bad bearing is spinning

 

[jws123]

How many miles on the truck? could be anything from wheel bearings to Ujoints to rear pinion bearing do you have a vid of the noise?