Question about 2004 Pontiac Grand Prix
Actually what the computer is saying is first check the gas cap. If its on tight and the rubbler seal is in good shape and the sealing surface on the filler neck is good then decide if you want to replace the gas cap which is the cheapest route if the seal is pancaked enough that it doesnt seal anymore. Then drive for a few days. If this fixed the problem then the light will reset itself after a couple cold starts that allowed the system to be tested again. If this didnt work then the car need s to be put in the shop for diagnosing. You could have a bad solenoid of vacuum leak somewhere.
Posted on Jul 14, 2009
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Posted on Jan 02, 2017
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