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Originally Posted by davydawg
the p0446 code says Evaporative Emission Control System Vent Control Circuit Malfunction , were is the vent control circut, is it in that solenoid?? were is that solenid anyway, is it under the hood or by the evap can???
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MY 99 blazer had the same problem. There is a solenoid/valve behind the gas tank, but in front of the spare tire. You have to remove your spare tire to get to it(if your spare is under the truck). cost me 200.00 to diagnose an install and 35.00 for the part. Hope this helps.