I drove my 90 Burb to work the other day and I had this odd feeling,almost like I was towing a small trailer,I hadn't noticed it before and figured I'd look at it on my day off, well after I got off work I took the kids to school and on my way home I turned a right corner and BAM this loud noise came from the rear end and slightly jerked my truck, once I straightend out the noise went away,and never came back mostly all left turns back to my house until I turned on my street,right hand turn another loud bang and some fairly hideous grinding noise until I straightend out again,I'm thinking something in my rear diff is broke,any other general thoughts?