Originally Posted by
GregJ
Thank you so far for the ideas! Keep em coming! I took it to a small shop and the mechanic suggested to look at the bearings or the rear differential. I don't thing it's either if those but I'm open to anything. Thanks again!
Don't go back to that mechanic! If the diff is bad it'll howl like a Banshee or grind terribly and it's dead smack in the middle! I think the previous responses are a good place to start, plus check the suspension mounting points for worn bushings or loose bolts.