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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15201
Experience:  GM Grand Master Technician 2007. 14 years experience.
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I have a 2006 cobalt 2.2 5 speed manual. I replaced both

Customer Question

I have a 2006 cobalt 2.2 5 speed manual. I replaced both wheel bearings but am still getting a loud bearing noise at wheel speed. I am woundering if it is a transaxle bearing?
JA: Besides this, what condition is the car in?
Customer: the car has 185,000 all highway miles. the car runs and shifts great.
JA: Are you fixing your Cobalt yourself? What have you tried so far?
Customer: I am not a professional mechanic but I am a mechanic. I replace the wheel bearings on both sides.
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 11 months ago.
Category: Chevy
Expert:  kalamykid replied 11 months ago.

Did you replace the front and or the rear wheel bearings?

Customer: replied 11 months ago.
Both front. Is there a bearing that can be replaced in the transmission?
Expert:  kalamykid replied 11 months ago.

No. Did you check the rear bearings?

Customer: replied 11 months ago.
It's definitely front. It's not the wheel bearings, and it's not a knock so I would guess not a cv issue. That leaves transmission
Expert:  kalamykid replied 11 months ago.

You should check the rear any way. It is possible that the noise is reverberating through the car and it only sounds like the noise is coming from the front. Jack up the rear one side at a time and see if the wheel will move in and out if you hold the tire at the top and bottom and pull and push in and out on the bottom of the tire. If you feel any play the bearing will be bad. Then spin the tire as fast as you can by hand and see if you hear a roar noise from the bearing.