GMC Envoy:

noise when accelerate

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#1 4/19/2010 8:12 PM

childman
New member
Registered: 4/19/2010
Posts: 2

noise when accelerate

My 2003 GMC Envoy LX makes a vacuum noise when i accelerate. It runs but is a loud vacuum kind of noise.
Any idea what it could be ?

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#2 4/19/2010 10:44 PM

Administrator
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Registered: 9/27/2008
Posts: 1279

Re: noise when accelerate

Check the intake snorkel from the intake (air filter) box to the throttle body, and be sure everything is tight, in place, and undamaged.

Also, try to isolate the noise source. There have been issues with the Electro-Viscous Fan Clutch producing similar sounds.

More questions? Please include engine size.


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#3 5/3/2010 4:32 PM

childman
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Registered: 4/19/2010
Posts: 2

Re: noise when accelerate

It turn out to be the Fan Clutch.

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