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Gas tank builds high pressure between fill ups and check engine light is on

(1999 GMC Safari)
in Suisun City, CA on January 11, 2013
code P0440 evaporitive fule system do I have a blocked line a bad canister or a bad purge selonoid ?

can I fix or do I need a Mechanic?
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Popular Answer
on January 12, 2013
get it scan for codes, bring it to autozone
of Prestige Auto Works on January 14, 2013
P0440 is a general EVAP system code. There are many posibilities. I would recommend bringing it in for diagnostics to find out precisely where the fault is. We can smoke the system to check for leaks as well as other test to see if your solenoids are working properly.
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