Noises: I hear a grinding noise when I make RIGHT hand turns; noise is behind the dashboard on the passenger side.
Yesterday, I suddenly hear a high pitched shrill noise from under the hood as I am driving. It does not last long, approximately 20-30 seconds and then stops and returns later on 10-20minutes later.

Check the right half axle. Typically, the outside CV boot splits open, the grease is flung all over the place, and the CV joint starts to squeal and grind. The noise should be even worse, if you turn the steering wheel all the way to the right and go in reverse. A new Cardone Select half axle runs around $50.