2003 chevy trailblazer_lt_ext
I've check a few threads and couldnt find anything. Anyway it seems as though while I am driving there is a fine whining noise that appears to come from the right rear. While in park or nuetral there is no whine. As I continue to drive it continues to whine. I also noticed as I was doing the sea foam thing that there is another apparent whine coming from under the hood. Could this be the belt? Also I replaced the rear differential thinking that that was why I had the noise while driving but it's still there. I was thinking maybe an oxygen sensor? Rear bearings? I dont know I'm really stuck with this. :undecided ANY SUGGESTIONS PLEASE.