Question about 2006 GMC Envoy Xl

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Whirring noise from engine area - increases with acceleration

2006 GMC Envoy, approx 60,000 km. I have a whirring noise that increases with acceleration. Makes it sound like an electric vehicle. Noise is present even when parked and idling. Performance still seems fine. Anyone have an idea?

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  • Roberta Smith
    Roberta Smith May 11, 2010

    two possibilites i can think of ... the belt tensioner or water pump

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Mine did the same. It was a bad idler pulley

Posted on Nov 09, 2009

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Mine doing this now... It's the pulley under the alternator. I don't know if it's the water pump or not.
I removed the belt to find out. I'm certain of where it's coming from. It's a common problen I've heard on many Envoys and Trailblazers. Still researching now...

Posted on Jul 04, 2009

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Fan belt pulley bearings?
engine fan?
power steering fluid low?
starter motor engaged?
water pump?

Posted on Jan 27, 2009

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It can be a stuck starter gear wheel. the starter engages but then it will not pull back.Is running with the flywheel.

Posted on Jan 27, 2009

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