just had the check engine light come on and the code was PO449
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2007 GMC Sierra 1500 Question: where is the evaporative emission system vent valve/solenoid circuit located?
Answer #1mastertech6371 August 05, 2011, 18:33Master
vent valve is above or around the fuel tank. the 449 only says there a control issue, it never identifies a bad part just a failed system. you better get it check first before spending the money to buy the valve.
Replymedge79, August 05, 2011, 18:51Rookie
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