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 Post subject: wheres the evap system on a 2004 grand prix p0455
PostPosted: Sat Mar 31, 2007 12:15 pm 
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Joined: Sat Mar 31, 2007 12:12 pm
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My engine light came on for Code # PO455 evap emissions control system. Large leak..I did the obvious and replaced the gas cap with a new one and shut the light off, but it is now BACK on..I want to know how to trace the hoses in the evap system to look for any leaks...


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 Post subject: wheres the evap system on a 2004 grand prix p0455 
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PostPosted: Sat Mar 31, 2007 3:14 pm 
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Joined: Sat Sep 09, 2006 4:26 pm
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Location: Tyendinaga Mohawk Territory, Ontario
Follow the diagram for vacuum hose routing in the engine room (radiator support, etc.) or find a manual or http://www.alldata.com for diagnosis procedures.

Hope this helps and keep us posted.


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