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EVAP System. DTC P0449

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Old March 26th, 2008, 4:53 PM
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Default EVAP System. DTC P0449
has anyone had a problem with the Vent Solenoid on the EVAP System. I continually get DTC P0449.
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Old November 26th, 2009, 11:47 AM
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My local repair shop found a GM bulletin which says the EVAP atmospheric vent opening may have spider webbing inside. This causes a pressure increase in the EVAP reservoir and triggers the PO449 code. I am not an expert so he has ordered the new parts for me.
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