Quote:
Originally Posted by lehiguy
IIRC, the Toyota canister used an electrical actuation. The Chevy is simply hooked up to ported vacuum with one hose going to the tank, the other is a vent, or a source of fresh air to purge the canister. This should have a filter of some kind on it, like a fuel filter to keep crud out of the canister. The hookups are clearly labeled on the Chevy's canisters, I think it would be a better choice, since you will not likely have the ability to actuate the stock purge valve once you toss the 2F and it's related circuits.
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That being the case then the GM canister would clearly be the preferred choice unless OBD II in which case the ECU can drive the canister purge valve (though the impedances may be different so caution would be advised).