Did you get any fix for your problem? If you did could you please let me know about it as well.
I have the same problem, only diffrence is that on making right turns/lane change the sound is very prominent, it is less prominent while driving straight. BUT it completely disapears when making a left turn/lane change.
Funny thing is it started just 2 days ago, after my trip from toronto. I drove for about 950 miles.
Thursday, September 14th, 2006 AT 3:15 PM