P0446 Unsolved...Please help!

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jimsdenali

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Love my 2001 Denali XL 6.0. Although gas is around $10 here in Sweden, a couple of months ago I got a ses light, P0446 code (evaporative emission system vent control circuit) So started to look on the
web for solutions. I then orderered a new vent valve (a black plastic thingie close to rear axle, mounted on frame, size of a cigarette box)
And sure enough, after three cycles SES light came back, erased it again and
after every 3 cycles it comes back.... a real PITA..
I have attached a pic from my scanner...

Can someone PLEASE help me with this, really gets on my nerves!
 

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Milky1112

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Check your gas cap.. I've seen this code and the Gas cap fixes it.. LOL
 

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