purge or solenoid evap vent located where
http://engine-codes.com/p0446_gmc.html Possible causes - Plugged vapor canister - Faulty vent solenoid - Pinched or blocked EVAP hose - Faulty FTP sensor
click for more information A TSB was issued for this by GM
The perspective of this image is from front looking from passenger side. Item 1 is left, drivers side
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