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Evap solenoid replacement


Mbrandon91

Question

I recently replaced it on my 13 sierra about a month or so ago, check engine light went off. A couple days ago it came back on throwing the same code P0449. Does it take a few tanks of gas to completely clear it or could it be a faulty part.

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Could be a faulty part, but also could be a wiring issue to the solenoid.

 

If the solenoid is commanded open, but the electrical signal never gets there, it will throw the same code. 9x out of 10 it's the valve ... but you could be that one with a wiring issue.

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