The canister purge flow is detected during the specified driving conditions, even when EVAP canister purge volume control solenoid valve is completely closed.
EVAP canister vent control valve remains closed under specified driving conditions.
Where is the evap canister and vent control solenoid located on a 2002 saturn vue
This replacement Vapor Canister Vent Valve or solenoid is a new aftermarket part. It mounts to the vapor canister and is used to seal the canister vent.
oooh damn… someone just posted a thread about them getting a new evap canister and purge valve installed.. it can be done yourself for probably around 225 dollars.