hissing noise

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Jun 24, 2007 | 04:11 PM

Thread Starter

Beginning Member

Joined: Jun 2007

Posts: 33

hissing noise

I have a 2002 blazer 4x4,that has a hissing noise under the dash drivers side,it goes away if i step lighty on the gas,as soon as i let off it comes back,and it is very annoying,any ideas what it is.
Thanks Al

Jun 24, 2007 | 04:14 PM

igot10pinitis

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Joined: Jun 2007

Posts: 490

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igot10pinitis is an unknown quantity at this point

RE: hissing noise

you have a cat stuck under your hood.

j/k, prolly a vacuum leak.

Jun 24, 2007 | 04:20 PM

Thread Starter

Beginning Member

Joined: Jun 2007

Posts: 33

RE: hissing noise

I thought that,maybe the brake booster,is there a valve for vacum pressure i can check,and where might it be located.

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