Question about 2008 GMC Envoy
P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction
There is air escaping from the gas tank. Often a problem with the gas cap, try tightening the cap, reset the code and see if it comes back on. Essentially it is testing for cracks in the tank.
Posted on May 19, 2011
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Posted on Jan 02, 2017
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