Come along with Eric O at the SMA shope as he diagnoses and repairs this GMC Sierra that came in with a check engine light on and a DTC P0449 "Evaporative Emission (EVAP) Vent Solenoid Control Circuit" Now this is a really common problem that plagues these Chevrolet and GMC pick ups and is an easy one to figure out! Thanks for watching!
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50 thoughts on “Gmc / chevy truck -dtc p0449 evap vent solenoid control circuit”
  1. Avataaar/Circle Created with python_avatars Alex Huseman says:

    I can not find this part what is it called

  2. Avataaar/Circle Created with python_avatars evsnova74 says:

    Under what circumstances does the circuit activate the solenoid? I don't have a tech 2 so how can I verify that the circuit is good?

  3. Avataaar/Circle Created with python_avatars Dan Rieke says:

    What scan tool do you recomend?

  4. Avataaar/Circle Created with python_avatars Edgarperezaguilar says:

    gracias me ayudó mucho 👍👍

  5. Avataaar/Circle Created with python_avatars Hector Castillo says:

    Good job..

  6. Avataaar/Circle Created with python_avatars yetijoeyetijoe says:

    That's weird. My hose leads to the front of the truck. 2009 GMC Sierra.

  7. Avataaar/Circle Created with python_avatars Kev meister says:

    Well if she wasn't working before and she sure as hell ain't working now with that hammer 🤣 I love it hahah

  8. Avataaar/Circle Created with python_avatars Mark Pasieka says:

    why not measure to see if the solenoid is open with an ohm meter and if it isn't just rinse out the old solenoid?

  9. Avataaar/Circle Created with python_avatars Darrel White says:

    The filter assembly that is in the filler neck housing, what is that called? mine and the hose is missing.

  10. Avataaar/Circle Created with python_avatars Erwin Sardenta Rodriguez says:

    Anyone know where I can buy this ? I can’t seem to find it

  11. Avataaar/Circle Created with python_avatars Nestor Caamano says:

    Hi Eric I have this 449 on my 04 5.3 suburban just this code comes on but my question is would this part make my truck super rich you step on smoke pich black and the burns super rich can this be my problem it does it when I drive for to long full tank will be gone quick when it cools down it runs normal again black like a Duramax diesel engine what can I do to stop it thank you

  12. Avataaar/Circle Created with python_avatars AnkromBum says:

    Anyone know the part # for the bracket?

  13. Avataaar/Circle Created with python_avatars FogCabin says:

    "Don't condone snap-on tools in any way" as he's using a snap on scanner lol. Love the videos man!!

  14. Avataaar/Circle Created with python_avatars Rigid Wing says:

    I see a sign that says Jasper engines and transmissions. Well I have a rebuild transmission by Jasper and I am not happy with it..

  15. Avataaar/Circle Created with python_avatars Jesse Ruiz says:

    This p0449 vent circuit on this GM, I have a ford expedition with a P0446 and the description is the same as this P0449.

  16. Avataaar/Circle Created with python_avatars Bonnie Solesby says:

    My light has been on and off for awhile now does not want to idle good. How long do I have before it quits. Don't have time off for 2 more days

  17. Avataaar/Circle Created with python_avatars Franks Garage says:

    Interesting. My solenoid is new. Just bought the 2010 avvylanche. Good voltage, but ground is wonky. Need to determine why ecm isnt grounding it every time. Seems if i bring it inside from the winter weather and warm it up is when the fault occurs. Im at a loss, as its temperature related. Guess i need to find a diagram for the ecu.

  18. Avataaar/Circle Created with python_avatars Danny Wieler says:

    What scanner do you use

  19. Avataaar/Circle Created with python_avatars Gr Gr says:

    Great videos, thankyou for posting all your helpfull content. Its invaluable to watch a master at work!

  20. Avataaar/Circle Created with python_avatars skater78207 says:

    I did all three repairs and same issue

  21. Avataaar/Circle Created with python_avatars John Bailey says:

    Mine just went out 15 years old guess I was lucky

  22. Avataaar/Circle Created with python_avatars nelson letto says:

    Thank you for your help it will save me money

  23. Avataaar/Circle Created with python_avatars Sergio Rodriguez says:

    I bought me an Evap solenoid for my 2011 GMC sierra 4.8l today, I have not installed it but the one they sold me at advanced auto parts looks different. I hope they sold me the right part. Yours looks like a small can attached to it the one I just bought looks fully enclosed and horizontal vs. Vertical 🤔

  24. Avataaar/Circle Created with python_avatars Sharon Grant says:

    Where are you located? I have a Chevy Silverado 1500 LT with the same problem and would like to get it fix.

  25. Avataaar/Circle Created with python_avatars david millette says:

    any reason to replace the hoses??

  26. Avataaar/Circle Created with python_avatars Tyrone Tripod says:

    But what does a swap car with several evap codes do?
    i cant find any evap things in emssions to shut off, in tunerpro

  27. Avataaar/Circle Created with python_avatars *D C* says:

    How to remove hoses without breaking?

  28. Avataaar/Circle Created with python_avatars GooDViBe says:

    That electrical connector was designed by satan himself!

  29. Avataaar/Circle Created with python_avatars Robert Muñoz says:

    I need to do one on my truck tomorrow thanks for the video

  30. Avataaar/Circle Created with python_avatars Zub Zero says:

    I did notice it stays when I turn the vehicle on not the engine then if I start it it goes away then it comes on a bit later

  31. Avataaar/Circle Created with python_avatars Zub Zero says:

    Oil gage is at 40 percent battery in the 15 thermostat in the middle 210

  32. Avataaar/Circle Created with python_avatars Zub Zero says:

    But it doesn’t come back right away it takes a while

  33. Avataaar/Circle Created with python_avatars Zub Zero says:

    Hello buddy I’m having trouble I changed all the spark plugs and ignition coils and the P0300 goes away but then comes back

  34. Avataaar/Circle Created with python_avatars John Lee says:

    I am working on my 2008 1500 Silverado (not made the 1st payment on it yet) . I am a handy man at best. I've replaced all my spark plugs, wires, alternator, purge solenoid, evap canister, battery, ac blower motor, dash, all filter's (fyi, the 2007- 2014 Silverado cabin filters are a b** times two because you HAVE TO CUT OUT THE housing that would be its housing cap and SURPRISE, NO D*** FILTER! DO YOU HAVE TO CLEAN EVAPORATOR AND REMOVE ALL DEBRIS FROM THE CAVITIES AND ORDER A NEW PLATE/CAP AND FILTER.) she's sounding, running like a champ and sounds so good and seems to "perk up'" so well now right? Sorta kinda, I noticed oil leaking all over the oil pain (was told it could be a rear main seal leak)and transmission bell and coolant leaking from the tube that goes into their head of the passenger side head and beneath the intake manifold, aka a possible head gasket leak. My heart sank and my eyes tear up. I have drive train warranty, but y'all know how that goes, the rather the truck burn to the ground first! I was told "when life gives you lemons, make lemonade! You have all the ingredients and the Haynes manual you have is your recipe book!" I feel the truck coming back to life, but how much is too much? I'm changing the coolant and transmission fluid change tomorrow and am the type of person that will work on repairing and upgrading anything till it can't go any further, yet I have so much to learn and am new to automatics but I love learning!

  35. Avataaar/Circle Created with python_avatars Jonathan Hargrove says:

    09 Silverado. That ribbed tubing is hanging down. Cannot for the life of me figure out where it goes. It runs towards the front of the pickup along the frame. Anyone have any idea where it might go?

  36. Avataaar/Circle Created with python_avatars Oscar Gutierrez says:

    SWEET VIDEO

  37. Avataaar/Circle Created with python_avatars Bryan Gonzalez says:

    Hi i just wanted to know what is the part number for the vent solenoid

  38. Avataaar/Circle Created with python_avatars Jose Nazario says:

    Hi Eric, does a P0442 small leak can be cause by that same solenoid? I have 2007 Sierra 6.0

  39. Avataaar/Circle Created with python_avatars JT_ZX10R says:

    Is this same as code p0455?

  40. Avataaar/Circle Created with python_avatars Devin Hinton says:

    Bro the light was a genius idea never seen that before

  41. Avataaar/Circle Created with python_avatars Mike of Indy says:

    Why do you need a special circuit tester ? Can’t you find the resistance value and simply ohm out the circuit with a standard ohmmeter ?

  42. Avataaar/Circle Created with python_avatars rebecca anderson says:

    so my new one i should beat on

  43. Avataaar/Circle Created with python_avatars Justin King says:

    The line that runs to my filter does not go to the filler neck but runs to the front towards the engine, its an 08 sierra, do i need to chase it down or can i cut the hose and hose clamp it back to the solenoid

  44. Avataaar/Circle Created with python_avatars Timmy Johnston says:

    just another fucking smash and bang guy!!

  45. Avataaar/Circle Created with python_avatars TheOcculus says:

    I usually tape a chunk of string or wire to the filter before I pull it and the hose out of the crevice they stuffed it through. Makes pulling the new one back in much easier.
    The other option is to cut the hose off the valve and use the old hose as a pull snake.
    The things you do when you don't have a lift. :^)

  46. Avataaar/Circle Created with python_avatars Jc R says:

    Thank you very much 👍👍👍👍💯💯💯💯💯💯💯💯

  47. Avataaar/Circle Created with python_avatars P R says:

    "Make sure you test, don't guess"…words of wisdom.

  48. Avataaar/Circle Created with python_avatars TRUMP GOOFY says:

    How do I discont hose and mine is rusted on

  49. Avataaar/Circle Created with python_avatars Bobby Waters says:

    I think the design is fine. Its the location that is bad. I just replaced my evap vent solenoid on my Colorado. I popped the top off and it was full of dirt and debris. If they placed them in another location where it wouldn’t be subjected to the dirt, water and other debris, they probably would last quite a bit longer

  50. Avataaar/Circle Created with python_avatars grandcreator11 says:

    Stupid things.

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