Question about 2004 Pontiac Bonneville

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2004 Pontaic Bonneville humming noise wheel bearing?

I have a 2004 Pontaic Bonneville SE and there seems to be a loud humming noise that starts at about 25-30 mph. The noise is related to my speed not rpms on the motor. When I drive down a nice highway and turn slightly to the right the noise will go away. When I turn slightly to the left it does not. Wheel bearing? Need to rotat tires? Alignment? Any help would be great!

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I had a similar problem, when turning to the right or on a right curve, the noise would go away. After some research I found it was the left wheel bearing assembly. I replaced it and the problem is gone. Therefore, check the wheel bearing assembly. You may have to replace it.

Posted on Jun 09, 2009

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