Check Engine Light Diag EVAP Codes

Check Engine Light Diag EVAP Codes

This is a video of a 2006 GMC Sierra that had a check engine light & some evaporative emissions codes. I show how to diagnose the problem with a scan tool and the upgraded parts required to repair it. The codes in the PCM were P0449 & P0455. I repaired it with a procedure in GM TSB 02-06-04-0374 that was to repair a restricted EVAP vent path &/or code(s) P0446 / P0442. This problem could also result in a fuel tank that is hard to fill.
Video Rating: 4 / 5

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24 Responses to Check Engine Light Diag EVAP Codes

  1. Debo952 says:

    I have an P0440 on a lexus. Is the evap purge valve (on he the intake box) suppose to be on the open position when the car is off?

  2. 1977bjm says:

    Thks so much, very helpful!!!!!

  3. wafrederick says:

    Best tool to buy when these evap codes appear is a smoke machine.Redline is the best one on the market and cheapest to run

  4. novysen06 says:

    Very good video! and clear comments but I would like to know where you connect your tool to check if the currant is good? and if I don’t have that tool, is it possible with my multimeter to have the conviction that the circuit is ok?

  5. novysen06 says:

    Very good video! and clear comments but I would like to know where you connect you tool to check if the currant is good? and if I don’t have that tool, is it possible with my multimeter to have the conviction that the circuit is ok?

  6. MCRideout says:

    Nice video! You da MAN!

  7. TheTaion says:

    i got a mustang 2001 is hard to fill gas , i got evap large leak code 455 i check all the hose no crack or discannect , change gas cap , canister still not fix so is my solenoid bad ? can any body tell me ? thanks

  8. fike301 says:

    so the old hose just fits inside the 5/8″ hose at the solenoid?

  9. charls179 says:

    is that why my every time i put gas on my car it pops the Nosle ?my check engine is on nd thats when my car start do in it what could it be my scanner read the same code as your truck

  10. Cha2kDrAwn says:

    I sent you a message please get back to me as soon as you can.

  11. cassieann2012 says:

    CAN YOU GIVE ME THE EVAP CODE FOR MY 2001 DODGE DAKOTA SPORT, V-6, 3.9L, AUTOMATIC TRANSMISSION
    ALSO, IF YOU COULD GIVE ME A BALLPARK PRICE.
    AGAIN, I AM LOOKING FOR A EVAP LEAK DETECION PUMP AND EVAP LEAK DETECTION PUMP FILTER.

    THANK YOU SO VERY MUCH AND GOD BLESS
    CINDY S.
    MABANK,TX

  12. shoes121255 says:

    I have a recurring P0446 code on my 2003 GMC Sierra 1500 with a 5.3L ever since I changed the fuel pump. So far I have replaced all of the following…evap vent valve (used updated system as shown in video), purge valve, charcoal canister, fuel tank pressure sensor, fuel cap, and the fuel pressure regulator valve. Any ideas would be appreciated. If I clear the code it will stay off a few days then come on again.

  13. theredmanator1 says:

    For anyone who wants to know, amazon has these parts for $65. Just enter the GM part number in the amazon search field!

  14. joey102578 says:

    ehy i have the same codes coming up i know this video is old hopefully your still check your youtube channel. MY truck already has the new set up i have a 2006 gmc sierrs 1500 vortec max. do i have to change the whole thing or just the filter?

  15. Gabriel Ward says:

    This video helped me out so much! New solenoid on and no more check engine light! Thank you!

  16. greg10126 says:

    Great vid, explained very well thank you!

  17. MrLjcorona says:

    Does the solenoid and the vent affect your gas milage??

  18. TruckModCentral says:

    Great video man, I am going to add this to a thread we have on our forum to help other folks out. We have a bunch of info on the P0449 code and this video is a missing link for our thread. Hope you don’t mind, if you do just message me and I’ll remove it. Thanks.

  19. markj15062 says:

    On My 1999 beetle. Car runs fine when I start it, BUT only when I get more gas its hard to start. I have to pump pedal to get it to start. After this it starts and runs fine. ONLY when I get more gas it acts up.. Is it a fuel tank pressure sensor that has gone bad?

  20. roadragecustoms says:

    Snap-On MT2500

  21. Hector Patino says:

    What kind of scanner is that?? I have a p0332 code that autozone gave me on my 01 5.3 silverado and I wanna make sure it isn’t the knock sensor that’s gone bad by restating it and seein if it comes back on.

  22. HoustonRocket281 says:

    thank you!! finally i found something that can help me !

  23. fomoco300k says:

    I certainly understand how busy life, work and family can be. I think I speak for lots of folks when I say we miss your videos and know how. Family is always most important thing, tho. Best wishes to your wife. (PS- Looking forward to that train horn!)

  24. roadragecustoms says:

    @fomoco300k I’ve been pretty busy @ work. (I do have another full time job & these vids are just my side work.) Also, my wife is in college & her education seems to be more important than my vids & she gets first call on our computer. That being said, the train horn is installed on my truck, & I’ll be uploading the video as soon as I can.

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