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In this video I have a look at a 2003 Chevrolet Suburban that came in with the SES light on with a code for the EVAP system. P0446 was the code stored in it. This one was a pretty easy fix -Enjoy!
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50 thoughts on “Chevrolet suburban: evap code p0446”
  1. Avataaar/Circle Created with python_avatars Jay Tyree says:

    😳😎Man, you are the beast on these videos and how you track these things down, Great job Eric!!

  2. Avataaar/Circle Created with python_avatars Chico Deon says:

    Good Work

  3. Avataaar/Circle Created with python_avatars Rod Marin says:

    Great follow along.. that sealing method on that sensor sucks to say the least. I've seen a split grommet/plug, on a similar install. The R/D staff was grossly out to lunch at the GM plant.

  4. Avataaar/Circle Created with python_avatars Ice man says:

    I have a 2007 Sub with only 74 miles. Check engine light turned on with OBD code P0446 (Evaporative Emission System Vent Control Circuit 1/1. I've replaced the gas cap, vapor vent canister valve, vapor jumper wire and the Emissions Vapor Canister Purge Valve Solenoid EVAP Vent ( I don't think it's necessary but I did it anyway). Cleared it and the check engine light is gone but after driving 93 miles, the I/M is still not ready with a combo drive of city and fwy. Drove it for another mile and after 6 cycles, when I ran the OBD at 94 miles to see if it's I/M ready, unfortunately I see the same "pending" P0446 code despite driving it up to 110 miles hoping it will clear on it's own. So I decided to erase the pending code/OBD and did the same thing again. Drove it up to 92 miles without check engine, still not I/M ready and at 94 miles later it's still not ready and the "pending" p0446 code is back. I'd appreciate any suggestions on what to do so I can get this smog. Btw, I/M reads as: PdDTC (1), Evap (X), Cat (X) and the rest has a check mark/ready.

  5. Avataaar/Circle Created with python_avatars Kaibil66 says:

    Again, another great video, very professional as always…I loved the story about your ears 👂😀👌

  6. Avataaar/Circle Created with python_avatars Julio Vargas says:

    This guy always confuse people. To much talking.

  7. Avataaar/Circle Created with python_avatars Alan C says:

    Thanks for the video! I've been chasing a P0446 in my 04 Suburban and "throwing parts at it." After changing the vapor cannister vent solenoid twice I might need to investigate the fuel tank pressure sensor. There was a TSB on relocating the vent solenoid above the transmission to keep it from fouling up–I might need to try that since I get this code about after about a year…

  8. Avataaar/Circle Created with python_avatars Matt Man Productions says:

    Ugh… I hate the gas tanks in Chevy vehicles 🤦‍♂️, especially when you have to replace the fuel pump😖.

  9. Avataaar/Circle Created with python_avatars Benice Ryan Balague says:

    Hi Eric. I just changed the sensor on the top of the fuel tank on a 2011 Chevy Silverado 5.3L flex fuel. After driving it less than a month and it threw the same code P0446. Any suggestions before I buy an Autel? Lol

  10. Avataaar/Circle Created with python_avatars Not Evolution says:

    I hope my mechanic is as determined as you are. Been in once and scheduled to go in again. P0446 code on 2006 Monte Carlo.

  11. Avataaar/Circle Created with python_avatars Ghost21 says:

    how much would this cost to fix in the shop? I wonder.

  12. Avataaar/Circle Created with python_avatars C says:

    I wish you could do a live engine diagnostic and repair and we watch and ask questions….

  13. Avataaar/Circle Created with python_avatars Jeffery Powell says:

    my father in law had one that started like that it had a bad oil pressure switch

  14. Avataaar/Circle Created with python_avatars the reptile guyz says:

    It's a common problem I have an 05 suburban that I'm dealing with the same kind of issues long starts I believe there is a common problem inside the fuel pump where they don't build up the proper pressure and hold it there until it starts I thought it would change after I replaced the pressure unit on top of the tank it did not

  15. Avataaar/Circle Created with python_avatars md conroymd says:

    Love the show. Take a look at endoscopes for auto use. Some very nice ones at $ 35.00 to $ 40.00 with abilities for pictures as they use computer screen for “your eyes”. When you got up on the gas tank roof, the scope could have looked first. Best wishes.

  16. Avataaar/Circle Created with python_avatars Rob C says:

    GM and Chevrolet in particular is how mechanics put their kids thru college once you diagnose the 1st failure their are 100 more with the same failure mode in the pipeline. I used to work for a GM OEM supplier GM takes almost forever even to admit let alone fix a design flaw. I call it "industrial hubris" and politics and GM is in a class by itself in this regard.

  17. Avataaar/Circle Created with python_avatars Skylar Scales says:

    Here In south Texas 2wd Tahoe’s and suburban’s are more popular because we lower them a bit and haul cheeks on the interstate

  18. Avataaar/Circle Created with python_avatars William Dawson says:

    You've left me in a total vacuum. 😉

  19. Avataaar/Circle Created with python_avatars Jeff Crane says:

    It seems a simple task to diagnose this problem but a hassle to repair it. I wonder if that other shop just did not want to do that job, fearing the undercarriage would be all rotted up so that those tank straps and bolts would be no fun whatsoever? Easier to farm it out to your shop and play dumb so the boss figures they had to do it that way. In the end, you had no trouble and hopefully made decent money on it.

  20. Avataaar/Circle Created with python_avatars Dan Lemke says:

    I wish you would quit posting videos so I could get something done…. Not sure if you ever read these anymore, but just how many scan tools do you own? I am researching which one to buy, but dang, they sure are proud of'em!

  21. Avataaar/Circle Created with python_avatars Driveway Garage says:

    I bought a used Envoy and the sensor was hanging by the gas tank and I couldn't figure out what it went to so I did a little research and found out and the nipple was still stuck in the tank so I pushed it into the tank because I couldn't see it I could only feel it and replaced the sensor and it worked fine.

  22. Avataaar/Circle Created with python_avatars david hinkle says:

    How if you can find E cap problem without the fancy sorcerery gadgets

  23. Avataaar/Circle Created with python_avatars Stormy Rain says:

    Before I even watch this video, I just wanna say: Eric, rust is just as bad in the south as it is in the north. We just get it in different areas of the car. I live in Texas, and tbh if the sun touches it, plan on rust. Down here the sun cooks everything to death. I have seen metal on cars reach over 200 degrees down here. Think about what that does to anything painted. So don't think we don't have rust buckets down here, because we do. Some are real bad.(rust holes in the roof and so on).

  24. Avataaar/Circle Created with python_avatars fish man says:

    The cam position sensor could be starting to fail with that starting issue..

  25. Avataaar/Circle Created with python_avatars Rockcycle Studio says:

    Great video Eric! I Think all the comments below said everything I would have said…

  26. Avataaar/Circle Created with python_avatars John LaCroix says:

    WOW very kool great info. AAAAAAAAAAA++++++++++++ again great video I liked it a lot keep up the great work

  27. Avataaar/Circle Created with python_avatars jorge fernandez says:

    Funny Guy, interesting video. Informative as well.

  28. Avataaar/Circle Created with python_avatars Torsee says:

    Hung your self by the ears..
    Explains a lot!

    Funny you’re not taller!

    😂

    Glad you survived to entertain us!
    👍👍

  29. Avataaar/Circle Created with python_avatars Arild Andersen says:

    This is quality work!!!! You are good SIR!!! I should wish we had soo good mecanics in Norway!!!

  30. Avataaar/Circle Created with python_avatars penny pincher says:

    A paper clip is a techs "J tool" alternative

  31. Avataaar/Circle Created with python_avatars David D'Amico says:

    Interesting stuff nice job

  32. Avataaar/Circle Created with python_avatars david hinkle says:

    Glad your mom saved ya

  33. Avataaar/Circle Created with python_avatars david hinkle says:

    You da man

  34. Avataaar/Circle Created with python_avatars S A K says:

    The moral of this diag is: be careful or you may kick the bucket:D

  35. Avataaar/Circle Created with python_avatars Michel Swerissen says:

    This car is going to haunt you the gift that keeps on giving.

  36. Avataaar/Circle Created with python_avatars Southwest Performance LLC says:

    Laughs in hptuners

  37. Avataaar/Circle Created with python_avatars Jacob E says:

    Mr o, I’m having withdraw symptoms, I need a video!

  38. Avataaar/Circle Created with python_avatars A Smithh says:

    Yep, your correct. Thought I was going blink watching the video. But good info..

  39. Avataaar/Circle Created with python_avatars A Smithh says:

    Don't pay another home insurance bill, OTTO insurance is garbage fake insurance.

  40. Avataaar/Circle Created with python_avatars 404 Site Not Found says:

    I'm now the proud owner of an SMA t-shirt. Great stuff.

  41. Avataaar/Circle Created with python_avatars Anglegrinder46 says:

    I swear I'm gonna invent a VR "game" where you enter whatever car you have and it scans yours(under hood only) and it shows you what exactly to unbolt,unscrew,take off,job by job,it's going to know when you're done,if you've done it right,and as long as you have arms and fingers and tools you can get any job done cause I can see it many times,go to do it and I need the video again

  42. Avataaar/Circle Created with python_avatars Glenn Hamblin says:

    Had to replace the fuel pump in my 02 Yukon. I removed the rear driver side seat, drilled a hole and found the pump location with a borescope. I made a fiberglass panel before cutting a hole in the floorboard with an air chisel. Replaced the pump, painted the cut area and the fiberglass panel with a marine coating. Installed riv-nuts and bolted the panel down.
    Any future work on the pump or accessories should be super easy. 🙂

  43. Avataaar/Circle Created with python_avatars seapeddler says:

    Can you explain why the 2010 GMC Terrain has a crimp in the small dia metal tube, on the fuel filler neck?
    The line connects to a plastic line that either goes to the tank or the vapor canister.
    If the metal line goes to the vapor canister, then it just evacuates fumes from the tube?
    When I zoomed into an aftermarket pic of the fuel filler neck, I also see a crimp.
    If the tube is crimped, why is it needed?
    Was it just a mistake and a quick fix by GM ?

  44. Avataaar/Circle Created with python_avatars crimson pearl says:

    Why is it that practically every single car that comes in this guy's shop is either a total piece of crap, rusted out, VERY old, uncared for and downright filthy inside and out?? Doesn't anyone in upstate NY have any pride of ownership or newer cars?? For once I would love to see a 2020/2021 car come in for basic maintenance in MINT condition!

  45. Avataaar/Circle Created with python_avatars Ron Kennedy says:

    Have you ever done a vid on 2013 Chevy Traverse alert "Service Stability track and Traction control off" have this come on intermittent on the wife's vehicle.

  46. Avataaar/Circle Created with python_avatars OLD SCHOOL says:

    Ok here's a comment you asked for-
    Stop forcing your words from the back of your throat.
    Slow down on the diagnostics and tell us what each step is and how the system works- You run through it while talking to yourself and it's really hard to follow the sequence and what each test is about.

  47. Avataaar/Circle Created with python_avatars Harry Harding says:

    Could you please explain the 5 volt reference test proceedure

  48. Avataaar/Circle Created with python_avatars Kelly Ingels says:

    Mom to the rescue. Great and very informative video Mr. O

  49. Avataaar/Circle Created with python_avatars Frank Grohotolsky says:

    Why do you put a swivel fitting on every individual air tool you got vs just one on your hose?

    PS Love the channel and everything you do! God Bless to you and your beautiful family!

  50. Avataaar/Circle Created with python_avatars South Main Auto Repair LLC says:

    Kind of an old vid from this winter folks that I kept in the archive for a couple reasons.
    -First was the video quality on it sucked. Sorry bout that, I often get distracted working and forget to check on the camera.
    -Second I wanted to make sure the customer had no issues and indeed the vehicle worked prefect, ran a full drive cycle and it has been several months with zero problems.
    -THIRD and most important I wanted to get another Chevrolet in with this exact EVAP system on it with the very small purge line to the tank and canister so I could see the decay rate on it. Indeed these do bleed down very, very slow compared to the later model GM's with the larger line from the tank to the canister. Any how, more of a self reassurance thing I suppose. At any rate-Enjoy!

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