2007 GMC Sierra 1500 Q&A
2007 GMC Sierra 1500 Question: where is the evaporative emission system vent valve/solenoid circuit located?
just had the check engine light come on and the code was PO449 - Visitor
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. Roy - mastertech6371