2007-2013 Evap Canister Vent Solenoid

CamaroLovr · November 10, 2014

So I just wanted to help everybody out by telling you my latest problem and repair with my 09 Silverado with FlexFuel 5.3. Please pin this to the top because this is by far the easiest, cheapest way to replace the vent solenoid on these trucks and this is a very common problem.

I was showing a P0449 code which I decided seemed like the canister vent solenoid beside the gas tank connected to the Evap canister. The only reason I finally decided to fix it was because my remote start wouldn't work with a code thrown. Since it's getting cold again, I want that back.

My first stop was the old interweb. What I found was this very useful article: http://www.gm-trucks.com/forums/topic/75210-evap-vent-valve-solenoid/. I hope that link works. I don't post on forums often but people need to know this.

A post by odayflor in this thread really helped me understand what was going on.

That didn't help me figure out why my truck already had the dual port solenoid though so off I went to the dealer and Advance Auto Parts. What I finally found was this:

Basically on 99-06 trucks there was a tube leaving the Evap canister that lead into a vent solenoid. This solenoid is ACDelco #214-2149 or GM #25932571. It has 1 inlet and vent from the round lid on the solenoid. Now this design was prone to clogging and producing a P0449 code so,

In the 2009's or so they started building trucks with a solenoid that had 1 inlet and 1 outlet with a corrugated tube attached that was routed to above the transmission. There is no listing that corresponds to a 2009 having this dual port design at the dealer or any other aftermarket parts store until you get into the 2011-up models. They show the old single port design.

Now if you go to the dealer with a 1999-2010 truck, they will tell you that you have to buy the conversion kit which is the later dual port solenoid and remote filter for ~$100 dollars, plus the jumper wire for $40, since the plugs have now changed on the solenoids(more on that later), and provide your own 5/8" heater hose and 4 hose clamps. This relocates the inlet above the transmission bellhousing in order to ,theoretically, prevent clogging and water contamination.

Here's what they don't tell you, and won't even if you know this and ask about it. I was told "sounds like you're just grasping at straws" by my local friendly ~~a** rapist~~ GM parts dealer. In there parts catalog, a 2011 Crew Cab Short Box Silverado lists a GM #20981705 ACDelco # 2142339. From RockAuto it costs $48.79. and only $75 at the actual dealer. This is a dual port Solenoid, bracket, supply hose with quick disconnect fitting, corrugated vent tubing, and remote filter with shield all pre-assembled. This particular part number is for a Crew Cab with a short box but there are 2 other part numbers to accomodate the other length hoses for the other length trucks just check out RockAuto. I decided to just order it and see just out of curiosity. Guess what? It fits my 2009 like a glove!!!! Even down to the matching OEM parts numbers stamped on the parts. Once done, I reset the code by pulling the battery clamp for 30 seconds and she started right up with the remote start. So instead of buying the retrofit kit from the dealer for $100 then cobble it together with heater hose and clamps, you can buy the whole factory assembly for $48.79.

On the Jumper wire. This is necessary any way that you go for the most part. I've seen some people post that they didn't need them with aftermarket brands but I definitely did with the original ACDelco one. The reason being is that GM changed the replacement solenoid plug style from an "oval" to a "square" style plug in. On RockAuto it's only $17.73 ACDelco #19257603 so order it too.

So, If you have a 99-2010 and only have the single inlet solenoid and simply want to replace that and don't want to fool with a relocated filter, use ACDelco 214-2149.

But if you already have a dual port solenoid or you want to replace your single port with a relocated filter assembly use ACDelco # 214-2339 for crew cab short box trucks (remember to check @RockAuto to confirm fitment on your length truck) and for $78 shipping and all, you can have a factory part that doesn't look like its been all hacked up and will only take a 13mm wrench and about 10 minutes time to install. It even comes with clamps on the corrugated tubing to snap it to brake lines along the way so its not just dangling.

ram1067 · November 13, 2014

worked for me!

***IMPORTANT INFORMATION YOU MUST READ*****

Ok everyone, listen up....If you have a 04 and newer silverado, with a failed evap vent solenoid, you have to read this info. Do not pay $100+ for this part(actually $150.00 at the dealer). The following part numbers associated with this part have been gm#19207763,19152349, and AC DELCO #'s 214-2082 costing over $100.00 for the modified part. This is for the modified part, with the relocation of the filterbox, and the added hose that seperates the two. No one at Gm will tell you this, but this same part, that was origionally on your silverado, is also used in the 2006 Suburban. It will be an identical replacement for what is ON YOUR TRUCK, and the cost is $24.04 AT THE DEALER. I know this because I own a 2006 silverado, and a 2006 suburban. Looked at the suburban when the part went bad on the silverado(from overfilling the tank)and bingo, same part. Ask a parts person at GM, and they will tell you otherwise, but they are lying to you. Bought the suburban part today part # 25932571 (GM #) and everything is identical, right down to the numbers stamped on the part itself. Took the part off my silverado, put the replacement on (which gm told me is not the right part), cleared the codes, and bingo no more light after 3 consecutive starts...... Why, is it that GM feels we need to pay the price for something they did wrong???? And moreso, lie to us, telling us the $150.00 part is our only choice to fix the problem. My truck went 40K miles with the origional part, and probably only went bad because of my own stupidity in overfilling the tank, whay would I not just want to spend $24.00 to put on the same part, that will probably go the rest of the life of the truck with no tank overfills???? I say CLASS ACTION LAWSUIT FOR EVERYONE THAT HAS BEEN SCAMMED INTO PAYING THE RIDICULOUS PRICE that GM is trying to suck out of us.....Please pass this on to the world, and every forum you can...Get the word out....Let the parts people at GM know we are on to their BS, and they can't take advantage of us like they have.....

00Silverado4x4 · November 13, 2014

Unfortunately I was one of those that found this info out AFTER I had the dealer repair my truck....$300.

Let's keep this info circulating as long as possible to save others. Thanks chevy1067.

TooTall1 · November 13, 2014

I replaced the dual port on my 2008 with the old style and much cheaper, AC Delco 214-2149 and it's been working fine for nearly 2 years. The biggest cause of failure with any of these is overfilling your gas tank. You should only fill until the nozzle clicks off and stop. Don't round it up to an even amount, don't try to squeeze in as much gas as you can, just stop. Your evap solenoid will thank you.

CamaroLovr · November 13, 2014

What worked for you Chevy1067? The single port instead?

And yes you're right TooTall, but I bought mine used and the previous user must have flooded it constantly. I just wanted to return mine to stock appearing. Not that any buyer down the road is going to notice the single port but still.

ram1067 · November 14, 2014

I Bought the 06 suburban part # 25932571. Just cross reference the part.....CamaroLovr >Not sure what you mean about "The single port"

mine was full of dust and smelled like fuel..... TooTall1 > is right DO NOT top off your tank! probably caused my problem.

got mine from amazon,

00Silverado4x4 · November 14, 2014

I Bought the 06 suburban part # 25932571. Just cross reference the part.....CamaroLovr >Not sure what you mean about "The single port"

mine was full of dust and smelled like fuel..... TooTall1 > is right DO NOT top off your tank! probably caused my problem.

got mine from amazon,

That's why I'm concerned for my truck. The other day I was getting gas and apparently the pump didn't want to shut off until my tank was beyond full. It clicked and then the truck threw up gas all over the place. Glad I immediately drove for another 75ish miles before I got home. Also glad there was a water hose right there to rinse off the bed side.