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2007-2013 Evap Canister Vent Solenoid
CamaroLovr posted a topic in 1999-2013 Silverado & Sierra 1500
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.
