So my 2007 burb started a hum about a week ago. It gets louder as i go faster. At first I thought it was the front wheel bearings. So I changed them. It's still there. Any ideas. Also noticed that my cv boot is leaking grease. Not sure if that would cause the humming. I know a bad tire could cause humming. But I don't think that's it either. Could be the rear wheel bearings. But again not exactly sure where it's coming from

 

Is the steering harder than normal, or vibrating. If so, it could possibly be low on power steering fluid.

 

Steering is fine. But I have noticed a slight vibration around 70 mph

 

Hey trainwreck91,

I’m sorry to hear that you are having these concerns with your vehicle. Please let us know if you would like for us to look further into this for you. Please send a private message with your full contact information, VIN, current mileage, and dealership name if any extra assistance is needed. Thank you.

Kristen A.
Chevrolet Customer Care

 

So I've been reading on another site that guys replace every part to their suspension with no luck on this matter. But 1 guy noticed that one of his bump stops was touching the body. And the other side sat up a half inch off the frame. So he adjusted his torsion bar the vibration went away. So now atleast I have a place to start. I was gonna swap out cv joints and u joints in the mean time. I'll post back my findings if weather permits this weekend.