SOUND INCREASES WHEN GOING FROM 50 MPH & UP, AND DECREASES AS CAR SLOWS DOWN. COULD IT BE THE FRONT BEARINGS? DEALER CHANGED BOTH HUB/BEARING/SEAL LAST OCTOBER 2006. AT IDLE OR LOW SPEED, IT’S NORMAL.
FYI:
just as I thought, it was the front wheel bearing, left or driver side only. Dealer replaced them free (still under warranty).