Whining noises from the rear when driving that increases with speed is clearly a rotating component. It is normally a bearing that is making the noise, so I would suggest lifting the vehicle and putting it on jack stands so that you can lay under the vehicle or at least next to it while it is spinning to try to pinpoint where the noise is coming from.
I suspect it is the pinion bearing in the rear end but this could also be tires, hub bearing, differential side bearings, etc.
Here is a guide that will help with this:
If you can get a recording of this it will help us determine what it could be. Thanks
Friday, May 22nd, 2020 AT 4:56 PM