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10-18-2011, 08:13 PM | #1 | |
AF Newbie
Join Date: Oct 2011
Location: Saskatoon
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Vacuum Leak? 1999 Jimmy SLT
Need help to diagnose possible vacuum leak. Experiencing hissing noise and have targeted noise to be coming from under dash. If I turn the control dial from defrost to floor or vent sometimes the leak stops. Air leak also stops eventually but is becoming more prominent over time. Any thoughts?
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10-19-2011, 08:10 AM | #2 | |
A990 racer
Join Date: Mar 2002
Location: Chestertown, New York
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Re: Vacuum Leak? 1999 Jimmy SLT
You need to trace the hoses that go in thru the fire wall, maybe a vacuum operated mode door in the hvac system.
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