Gm has always been known for unit bearings (front hub/bearing assembly) issues. If it changes tone depending on which way you turn the wheel by driving it is one of the front unit bearings. The front diff pinion bearing will be a constant roar below your feet. Hope this helps.thanks for the insight Shaun.
What does it sound like when the bearings go in the front drive? since it is warming up and drying out here in MN this thing sounds like death warmed over, with a distinct left-turning increase.
I have new bearings and upper control arms on the way but it makes some really weird noises if you have the wheel turned just so while driving that make me think this is not a wheel bearing and tire noise alone.
still no tire choice made yet, but definitely need something! Perhaps Uncle Sam will fund a new tire purchase this spring....