GM SUV/Truck clogged Evap lines (2007-2014)
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- čas přidán 11. 01. 2021
- Just a few tips from what I learned dropping my fuel tank to unclog the evaporation lines. This was needed because replacing the canister and valve did not completely resolve the issue. I highly recommend having someone help you if possible. It would have gone much, much faster.
Here are some associated parts that I have replaced to address this issue (not just in this video.) PLEASE check compatibility before ordering yours. I do receive a small commission if you order from any of these links.
GM Genuine Parts 23481275 Vapor Canister Vent Valve
amzn.to/3p5DicR
GM Genuine Parts 19257603 Vapor Canister Vent Valve Solenoid Jumper Wiring Harness
amzn.to/2YXlwOu - Auta a dopravní prostředky
Great video. By the time your lines are clogged you will have a ton of charcoal in the tank that needs to be cleaned out.
Thank you for taking the time to share this.
Just finished and filled up. Great video. Thanks.
Sounds good Scott. Glad it helped!
Thank you for this video, it helped a lot! My problem was a vent line was kinked, I had to order the set
I’m currently going through the same problem. Replaced the same parts you did. For this video sake I won’t take the tank off. I’ll just blow through the passenger lines. Thank you very much sir 🫡
If that doesn't work replace the canister purge solenoid which is on the upper intake manifold
Wow wish i saw this video sooner. I replaced both and no luck. Knocking this out next week for sure. Thank you
Good luck!
Update: I just finished and filled up. I got a ton of pellets out of the lines. I also changed the fuel pump while I had the tank out. Thanks for the video!
Fantastic, thanks for letting me know!
My truck.....2007 Sierra NNBS has never had the canister replaced. I think Im gonna do this just as a preventative. Thanks for the video
Thanks for the video.
Thanks for the advice! I have replaced both as well and still have the issue. I'll try this next.
Thanks for taking the time to comment David. I was doing work and had to pull the intake of the motor. So I decided to replace the purge solenoid right there by the intake. It was clogged as well. I was able to run air in that line and blow it out clean. All that said, I once again have a slight issue. It happens when you first start filling gas when the tank is empty. Once I slowly get a few gallons in, it is ok. I think I just need to blow out whatever lines I can easily get to again. I guess it is residual charcoal pellets that has been moving around as I tackled this issue in parts and pieces!
Same here I replaced the hole fuel system and still cant put gas
@@chonvalverde7079 Thanks Chon. Mine is bearable I guess. Improved from how it was. Let us know if you get it figured out.
Well this is going to be an interesting experience but I’m going to see what I can do ! Thanks for the tips
It is interesting, that is for sure, lol
@@KMLTimesTwo well turns out my canister was all good and my lines weren’t clogged, must be the solenoid lol
OMG, this problems on my 2015 sierra has been driving me crazy. tried everything apart from this. Will do it on the weekend. Thanks mate!
I would say enjoy, but I know its not that fun, lol. Let me know how it turns out.
What's the verdict?
Painted a clear picture of how difficult getting that hose off was. The frustration I don't even want to imagine. Good work!
I really appreciate you making this video I had the same issue with my 2017 Chevy Suburban can't understand why they didn't put a screen to stop the pellet from going through thank you very much you're a blessing🎉
Thanks for the kind words sir! Glad it helped.
Dealing with this on a 08 Tahoe and wondering the same thing. Even the new vapor canister doesn't have a screen to stop it from happening again. One thing I've read to help prevent this from happening is to not top off your tank so gas doesn't go down the lines and into the canister where is will break down the pellets faster.
@@phitnessc6687I also am currently dealing with this on my 08 Tahoe. Replaced the canister, then the solenoid to no avail. I really don’t want to drop the tank. Gonna see if I can blow out a hose or two with the tank still on.
Thank you so much. Evap hose from GM is 400.00.
Thanks for the kind words. $400? Heck no! That's worth a trip to the junk yard.
Got a 2011 silverado 5.3 V.8 with a P0442 evap code.
I've changed out the gas cap, the evap control module under the hood, and got the truck smoked to check for leaks. None were found. I just did the vent valve and the charcoal canister Friday night.
Yesterday ( Saturday ) when I went to fill the truck with fuel, I turned the truck off, put the fuel nozzle in the truck and let it rip. ( lifting the lever and locking it so the fuel can fill and I don't have to hold the lever ) The nozzle didnt stop until the fuel is overflowing out of the fill tube.
Pretty sure I just filled my charcoal canister with fuel again and the code is gonna show up.
Other than all the shit I've already done.....what else can be the issue for the code? That one line?
my 2013 is going through this now Caddy EXT... who the hell designed this system needs a court martial! Man
Do you have the link or part number for that line? Its only showing feed line
Great video. I can only put in like $8 before gas spills out. The gas station pump nozzle not clicking. But I don't know why my gas tank is refusing to accept more fuel? I've checked all hoses and charcoal canister. Everything is intact. My gas gauge is always showing full. Can a bad gas pump and sending unit be the culprit?Any help would be greatly appreciated. Thank you
Not sure how to help you there....but I would think that if it was a bad gas pump you would have issue with it running or starting.
Great video brother my 2007 Chevy Avalanche burps up fuel at the pump and it’s frustrating as hell. I’m gonna have to buy an air compressor with that gun attachment and try and clear the line without having to remove the tank. Do you need any special tools to disconnect the clogged up evap line on both ends?
It has been while since I did this, but don't think any special tools were needed. Just patience and if you are lucky, someone to help. I have done all the lines and I still occasionally have some issues. I did my work...."one thing at a time" so I think I still have pellets still floating around in the lines. If you haven't done your cannister and purge valve, I would do those first as it is much easier and could fix the issue. Unfortunately, I think you will need to do them all. Good luck!
Would I be able to blow out the hose that gave you problems without dropping the fuel tank by simply disconnecting the hoses from their respective connections and shooting air?
I bet that some hose runs up to the purge solenoid on top of the engine.
one does goes to the engine and is easier to clear but the other one that’s thicker i’m pretty sure u gotta drop the tank to be able to clear it
Think it's possible to blow the lines out without dropping the tank?
You can blow a lot of them out without having to drop the tank. I would do this as a last resort. There are some that dropping the tank make it easier I think.
hope thats not my issue. house vacuum might try and air,
Is there a place that allows you to use their air blower, or compressor w/e?
I don't think so, but you could find a small cheap one on Facebook that should work.
I'm about to do thi. I have 2 questions,
1can i drop the tant just from the front and leave the filler alone?
2 i have an avalanche ,would it be easy to remove the bed?
That is a good question. You might be able to drop in the front just enough to do what you need to do, but I couldn't tell you for sure. Good luck.
Is it possible to just use a pipe cleaner to clean the lines instead?
Not sure what you have, but don't think so. Whatever it is, it would need to be pretty long and skinny.
Did you get it all out of the purge line going to the front that runs by the fuel line? I’ve done many of these and that’s the line I always have trouble clearing as it transitions from plastic to metal with a rubber section in the middle. It’s almost impossible to clear. It won’t stop you from putting fuel into it but it will cause evap codes due to not being able to pull a vacuum on the tank fast enough depending on how bad it’s blocked.
Well John, I thought that I did (get it all out of the line that goes to motor) but still have occasional issues filling.) I replaced the solenoid up there as well. I think I got most of it out of all the lines, but I think some moved around as I replaced the individual lines over ~6 months or so. I will blow out the ones that I get to again here in a few weeks.
@@KMLTimesTwo you’re really going to have to lower the tank down a little bit to get it all out of the lines back there. The way they designed that line makes it very difficult to blow it all out. It splits off multiple places. It has one connection at the top rear of the tank, one smaller connection that attaches to the fuel pump, the large one that is the rear line on the canister, the middle line on the canister, then to the front to the purge solenoid. If it’s hard to fill again it has to be at the rear between the tank and the canister or canister to vent solenoid. It’s almost ALWAYS between the tank and canister because that’s the way vacuum is pulling. Because that line T’s off in multiple directions it impossible to blow it all out without lowering the tank and blowing through it multiple directions. Shake the lines while blowing through them and don’t stop until the air is blowing through the line unrestricted. One of the biggest indicators that you have it all out of the rear line is that you can blow air into the hose that connects to the top rear of the tank and it comes out of the hose that connects to the rear of the canister easily. If air is not blasting out of that side loudly then it still has charcoal in it and the air is coming out of the smaller lines instead. If there is a restriction forward of the tank it may cause some evap codes but it will not cause the tank to be hard to fill.
Yours actually doesn’t have the connection at the top rear of the tank like the Tahoe’s do so that’s one less to blow through. Yours has five connections. Those two at the pump, two at the canister and the one at the front of the tank. It’s always that large one from the pump to the canister. If you have to, plug the small lines with something to be sure you’re getting full flow through the large line when blowing through it. We’ve always seen this issue from time to time with these GM trucks at the shop but it has become really prevalent lately. I’ve done three of them this month.
@@KMLTimesTwo what were the individual hose part #s??? I've dropped my tank twice now and cleaned lines, replaced all three evap components and i still can only fill 10 cents at a time!!
@@robertwilliams7188 I didn't replace any lines in this video, I just blew them out with air. I think there's two parts in the back that you need to look at. There's the canister and the valve. Did you replace both of those? There's also a line that goes from the gas tank in the front all the way to the engine compartment. Mine was clogged there as well. Finally there's a solenoid in the engine compartment where that line connects up into. I replaced mine. That said I still have occasional issues but I think it's charcoal pellets moving around that I was unable to get out at the time. I also wish I had done all of this at one time. I think doing it and parts over time allows the little pellets to move around and hide from you.
Hose removal procedure.
#1 remove tension on all connections.
#2 use strongest hand available on hose to tank.
#3 crush, twist, pull/push. If hose is damaged it required replacement.
#4 verify system integrity.
What causes the charcoal pellets? And do all vehicles have pellets travel through their line-tubes?
These trucks (and a lot of cars now) have charcoal canisters that absorb the gas fumes and keep them out of the environment. It's an EPA thing I guess. After a while I guess the charcoal breaks downs and starts to get sucked out of the cannister and into the lines. Once that happens, air can not get through and it makes it difficult to fill the truck up with gas. (The air in the tank has no where to go.)
Thanks for video. Need instructions for 2016 Canyon tank removal. I got to do this too.
Thanks. Wish I could help you with the other truck. I just have the Yukon. Good luck.
Going to give it a go if not work strip this truck throw it in the scrap heep good video though thanks Government with no plans.
my tahoe clicks when i’m filling it up and replaced the canister and cleaned the lines,what should i do next
I would do the solenoid in the engine compartment. It is an easy thing to try.
@@KMLTimesTwoi blew that line already and it still clicks
@@KMLTimesTwo The Purge solenoid has nothing to do with filling issues. Don't waste your money.
I done have tried everything my next step is doing this I guess
Good luck. Get someone to help if you can.
did u get evap code?
I never scanned for codes. I started all this because it took forever to put gas in it. I actually still have an issue sporadically.
@@KMLTimesTwo i just did a pulldown of the tank and non of the pellets are in. although i had a p0446 code. i took a blower and blew all the lines including the evap from the front engine and nothing came out. returned the tank and the code was gone. some said, need to change the whole evap lines in the tank which cost like 200usd
@@comaradelee did you replace the vapor cannister and the other vent valve thing? Those are common things to replace. I replaced both of those and had a bunch of pellets in those associated lines. There is also a solenoid in the engine compartment that is easy to replace. I would think those should be replaced before all the lines.....but I am not a mechanic, so I don't want to give you bad advice. I always try easiest to hardest.....although sometimes the easy fix doesn't fix the issue and you end up spending more $$. Good luck.
Will buy this parts and replace them. Just had them replaced 2020.but will see if this maybe bad
@@comaradelee hmmmm....if you just replaced them....I wouldn't do it again. Man....yours is fighting you big time.
How do you delete the entire EVAP system? It is useless and does nothing but keep mechanics and dealers in business constantly replacing parts.
🤡
Thanks, we'll try to remove the tank tomorrow. Before that, they cleaned the tank with coal, pipes, but it did not help. I hope it works after cleaning the air tube... CADILLAC ESCALADE 2012 PLATINUM ESV
tell me please, when you cleaned the air tube on the tank, did it work out?
Thanks