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Dreaded p0449 evap solenoid code


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Getting the evap solenoid codes. I ordered the ac delco 214-2082 evap canister + filter? I sent my vin number and was told that was the part I needed. Well I went under my truck today to see where it was located and the existing evap canister only has one entry point for a hose. The new evap canister shows 2 ports. I'm guessing one will connect to the existing hose and the other will be ran up to the transmission where it will connect to the filter that will be included? I have read up on it a little but just not 100% clear. I've got a 06 crew cab sierra btw...

Edited by Mando Ruiz
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That code is for the Vent Solenoid Control Circuit.  You use a bi-directional scan tool to turn it on and off while listening for it to click or use a test light while turning it on and off.

 

There's a difference between the purge and vent valves, make sure you get the right one.

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Yes, the new module should come with a filter. I opted to place mine under the hood to try and get it in the cleanest location possible.

 

Don't be surprised if the module alone doesn't fix the issue. If you drive a lot of dirt, it is possible the charcoal canister is full of dust and needs to be replaced as well.

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