Question about 2002 GMC Yukon XL

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2001 GMC Yukon XL

A humming noise when truck is in drive and moving no warning light visible

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If the humming noise is comming from the inside it could be the fan that cools off a computer chip right above the driver. I have a 2002 that does this. It looks like a place for a tweeter.

Posted on Apr 04, 2009

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You first need to determine if its front or back? i have a 99 suburban and when it was the front it was simply needing power steering fluid. but when it was the back it was the rear end.

Posted on Oct 30, 2008

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If it makes the noise more at speeds around 100kmph than you most likey need a wheel bearing but if its noticable aspeeds under 20 kmph than its probable a u-joint

Posted on Oct 30, 2008

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