I have a 2000 Jimmy 4WD 4DR. AUTO, ABS with 4 wheel disc.
Recently noticed what seems to be a humming noise as I am driving. Starts out almost as soon as I start driving. When I make a left turn or slight turn to the left it seems to get louder. I checked the tires, all look good. Noticed a sway bar bushing torn on the right side. I had to adjust the parking brakes 3 months ago for the safety inspection so I thought maybe something there. Removed the left rear wheel and the parking brake looked good. When I spun the hub I could here the "Hum". Didn't hear it on the right. Could it be wheel bearings?
I don't notice anything in the steering wheel while driving but I do feel a slight vibration at my feet on driver floor.

 

I have replaced a few front bearings on my Blazer but never in the rear. With the change in sound from turning, I would think it is a front wheel bearing.

 

Could be front bearings also. Jack up the front grab the tire 12 and 6 oclock and check for play. If there is some have someone look at the axle while wiggling the tire, if the axle moves up and down its your front hub, if not check your ball joints for play

 

I agree. Classic symptom of a bad front wheel bearing. (common for them to fail too)

 

Took it to my garage yesterday afternoon. They confirmed the front wheel bearings/ hubs are worn. Funny this is the second set I have installed on. First set put on about 8 years ago. Anyway he did say there is a noise from the rear axle but most is from the front.


thanks for all the replies. Happy New year to all!