So, for a while now, I get a loud squeal from my 9000CD every once in a while. It used to be every time I started up and then pulled out of my garage, it would squeal for about 3 seconds, then be fine. After a while, it turned to squealing for about 10 seconds after I got down the street a little. Now, I recall it squealing out of nowhere right in the middle of driving once or twice. Is this a serious issue? I hope there is no belt friction or anything. Please help!