any ideas what my 98 chevy malibu is doing theres a weird noise?

i have a 98 chevy malibu and when i drive under 20 miles an hour its fine but upon hitting 25 miles an hr theres as wierd humming noise that sounds like a small humm from somewhere in the car it gets somewhat noiser as the car accelerates but as i decellerate it slows back down to no noise . i was wondering if its something to do with the speed sensor as there is no speedo cable its all electronic on this car . we noticed the noise a week after we got back from virginia beach on a vacation. any ideas

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  • 1 decade ago
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    Possible tire going bad. Could be a wheel bearing but normally those get noisier when you trun one way or the other.

  • 1 decade ago

    its a wheel bearing.or as on that car its called a hub assembly

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