Ok, on my 99 ram this is what happens. I get a lot of squealing from the drivers side. The noise stops when I apply the brakes, also seems to stop when i make a right turn and increase if I turn wheel to the left!

Any ideas.

 

Check the brakes and the wheel bearing

 

It could be the pads themselves. You said it stops when braking, does the noise stop if you lightly press on the brake while coasting? If you have Semi-Metalic pads, from what I was told,they can get a chunk of metal to the surface, that will squeal until it wears off.