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Oh boy folks wait and see what we have in store here! Oh this starts out as your regular run of the mill EVAP trouble code accompanied with a P0017 and that is where things get silly.... Hope your in for the long haul because this is going to get interesting!
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48 thoughts on “Chevy colorado – evap trouble p0449 p0017”
  1. Avataaar/Circle Created with python_avatars Bill mcmenemy says:

    You are brilliant. Can I bring my 2009 chev colorado 2.9 four to you. My cam phaser is coding intermittently

  2. Avataaar/Circle Created with python_avatars Antonio Claudio Michael says:

    Oh that makes sense why other shop thought there was a electrical issue they used a DVOM when they saw constant battery voltage good Work Showing the oppsy from the other shop Tech I agree test lights work better then DVOM on Control circuits Eric O @SouthMainAutoRepairLLC

  3. Avataaar/Circle Created with python_avatars Antonio Claudio Michael says:

    The shop couldn't fix or diagnose a Bad Vent Solenoid 馃馃 interesting makes you wonder Eric O @SouthMainAutoRepairLLC

  4. Avataaar/Circle Created with python_avatars David Miller says:

    I'll be

  5. Avataaar/Circle Created with python_avatars Darrin Allgood says:

    I did not even have an evap issue, but enjoyed the video anyway….

  6. Avataaar/Circle Created with python_avatars Patrick Baitman says:

    Pops hood only to find it's got a Sloppy stage 3!

  7. Avataaar/Circle Created with python_avatars Benjamin Fuller says:

    Po449 Chevy 1500 99 Silverado runs ruff at idle any ideas

  8. Avataaar/Circle Created with python_avatars Edgar says:

    These truck ain't worth sh%t! I have one and don't know if its worth fixing!

  9. Avataaar/Circle Created with python_avatars David Sprocket says:

    Great explanation. The meter is very high resistance on D.C. voltage scales.

  10. Avataaar/Circle Created with python_avatars Ray Castillo says:

    Oops.

  11. Avataaar/Circle Created with python_avatars Ray Castillo says:

    South Main auto,great workand good lesson. Hod Bless.

  12. Avataaar/Circle Created with python_avatars Ray Castillo says:

    Good lesson, great work Eric.Keep up your awesome work. God Bless.

  13. Avataaar/Circle Created with python_avatars jack daniels says:

    Change the camshaft on the exhaust side

  14. Avataaar/Circle Created with python_avatars splash says:

    Lol
    After watching the series on the Colorado, that lasted more than some tv shows, it seems like you didnt take the easy ones…
    That probably already knew that they werent gonna get to the bottom of it, and thats why it got shipped off!

  15. Avataaar/Circle Created with python_avatars newjerseybt says:

    Almost the exact situation occurred when a electrician's helper I hired was helping me rewire a rat's nest created by a previous homeowner. The "helper" was in a trance for 15 minutes staring at his DVM which was indicating about 70 volts AC on a wire that shouldn't have been connected to power. I ran and got my old fashioned Simpson 260 which has a much lower impedance than his DVM and got a 0 volt reading instead. He acted amazed that I found this and I was amazed that he was not aware of phantom voltage from capacitive coupling since he was an electrician. Maybe he was milking the job…who knows.

  16. Avataaar/Circle Created with python_avatars Chase I.B says:

    When I鈥檓 NY are you located? I need a trust mechanic

  17. Avataaar/Circle Created with python_avatars RANDOLPH LATTIMER says:

    Oh, I forgot, one last bit of info: the truck doesn't overheat coolant but the gage shows it does run hot.

  18. Avataaar/Circle Created with python_avatars Ron A. Bolton says:

    The PCM Control side is probably Tristate, that is what causes the impression of a ground on a DVM.

  19. Avataaar/Circle Created with python_avatars Ron S says:

    But can she do it?

  20. Avataaar/Circle Created with python_avatars Direll Alexander says:

    Im a bit confused, should both the white wire and the red wire have 12 volts flowing thru them? and when the siliniod needs to kick on the red loses power. or no?

  21. Avataaar/Circle Created with python_avatars Wicked Coolname says:

    Does anybody up there ever clean their cars? It seems like most of the cars you work on have the interiors of a butcher's dumpster!

  22. Avataaar/Circle Created with python_avatars MIKE CONT says:

    Great diagnostic and fix.. thanks for taking the time.

  23. Avataaar/Circle Created with python_avatars Duncan Mac says:

    Thanks for the video.

  24. Avataaar/Circle Created with python_avatars wrr2112 says:

    Eric, I have an 06 Colorado with 0017 code. It needs a timing chain……………LOL, just kiddin'!

  25. Avataaar/Circle Created with python_avatars OldSkool 55F100 says:

    Vent valve: Duralast PV428 is $24…(04-05) GM 20941985 (06-12) Electric plug (Wells 1161) is only difference. Just heat the hose with hot water and switch it to the new one… Try cleaning the valve first… 12vdc and blow into it and it should be closed when powered… Valve comes off the housing… Tab is on top and turn it 90掳. OR the Fuel Pump corrosion issue…

  26. Avataaar/Circle Created with python_avatars Ram贸n Nieves says:

    Great job.
    May I ask you about a jeep grand Cherokee that I am trying to fix?

  27. Avataaar/Circle Created with python_avatars Patrick Murphy says:

    Good video I grew up outside buffalo not to far from you

  28. Avataaar/Circle Created with python_avatars Grey M says:

    Great video!!

  29. Avataaar/Circle Created with python_avatars Rooster Hayes says:

    My vent solenoid checks out fine but not getting any power to it.聽 Checked fuse and it's good.聽 Broken wire?

  30. Avataaar/Circle Created with python_avatars Jan Verschueren says:

    Excellent stuff showing the need to load circuits like solenoid valve control circuits when checking for command signals. When doing this with a multimeter, it should be equipped with a LoZ setting, but, typically those only come on specialized or high end multimeters. It's a lot cheaper to carry around a 100 Ohm/3W resistor (which doubles as a pair of backprobes).

  31. Avataaar/Circle Created with python_avatars carlos lopez says:

    Hey I was wondering how much is the program you have on the computer or tablet for any Dtc/Mil/functiontests

  32. Avataaar/Circle Created with python_avatars UBNizmo says:

    Whats the part number of the scope on the rope?

  33. Avataaar/Circle Created with python_avatars David Hollfelder says:

    Coil is "high resistance open".

  34. Avataaar/Circle Created with python_avatars Moggie20170000 says:

    give them an SMA sticker, problem solved.

  35. Avataaar/Circle Created with python_avatars anthony fym says:

    I actually had an identical vent code yesterday and I was scratching My head then I ohmed the coil and it was open so it was fixed nice explanation

  36. Avataaar/Circle Created with python_avatars Randy Newton Sr says:

    Cool video Eric O , I had an 04 Colorado ( bought brand new in 04) with the inline 5 / 3.5 liter I believe it was , and I never cared for that vehicle, It started running like crap at around 75 to 80,000 miles using in my opinion more gas than it should have , and would occasionally stall but start right back up and run OK for a bit and then do it again in a month or 2 very annoying!!!

  37. Avataaar/Circle Created with python_avatars Mark Warren says:

    What great series of videos and just the help I needed to tackle my own Colorado P0449 and P0017. Thanks!

  38. Avataaar/Circle Created with python_avatars Bob Borrell says:

    Great job Eric! Whew…Just finished all 5 episodes… what was the mileage on this POS?

  39. Avataaar/Circle Created with python_avatars Geo Jor says:

    thanks …

  40. Avataaar/Circle Created with python_avatars Mark Ferraro says:

    great聽 point eric聽聽 thank you for sharing聽聽聽 mark

  41. Avataaar/Circle Created with python_avatars Kevin Weaver says:

    Nice Fix Dude.

  42. Avataaar/Circle Created with python_avatars Intrade Motor says:

    Do you not own the LOAD-PRO test leads? from Dan sullivan? Because you can test the whole wiring harness for voltage drop with the push of the button with the patented load pro lead . Even the shroedinger box now owns the leads i think i might have managed to convince him to buy them "ohms law matters " dan sullivan is 100% correct. Your methode also works but Dan sullivans tool is like the ultimate time saver.
    i know one can have to much tools but that accessory is a must have if time is money.

  43. Avataaar/Circle Created with python_avatars busjockey1 says:

    Good job explaining how the computer checks for opens and shorts. For those vent solenoids Eric how much current do they usually pull? Your spot on about meter usage, have to understand what the meter is telling you and be aware of circuit operation. Thermo King Computers put out a bias voltage on the ac clutch circuit, not battery voltage but it is around 4.2, 4.3 Volts, you will see this value with your voltmeter in the power and ground of the connector unplugged. So to test dynamically either plug the circuit back in to check or how I like to do I use the Loadpro to fool the computer that the load is plugged in. Takes a minute for the computer to recognize a complete path but when it does if I have a good circuit path it will give me full system voltage on my meter which is the volt drop across the Loadpro resistor.

  44. Avataaar/Circle Created with python_avatars Pet Rock's Garage says:

    I'd love to see a full nerd explanation of what was going on. I would think the impedance of your test light also has an effect on the meter reading. I'm a big fan of voltage (drop) testing of loaded circuits. I was worried that you may have 'fixed' the problem by disturbing the wires when you unplugged the connector.

  45. Avataaar/Circle Created with python_avatars busjockey1 says:

    Eric are you going to the Vision Hi Tech Training expo? I"ll be there. Asked Ivan too. You guys should come, the top trainers in the industry will be there.

  46. Avataaar/Circle Created with python_avatars Fut Fatal says:

    Really really Great job……..i love your job sir

  47. Avataaar/Circle Created with python_avatars watajob says:

    So, let me see if I have this straight: The PCM signals the solenoid to open by yanking it's ground forcing the voltage to use the solenoid's ground, thereby "seeing" 0V, signifying that it's working not just passing current? Sheesh. What a "lovely" idea… 馃檨

  48. Avataaar/Circle Created with python_avatars CatScratch Cabinets says:

    I like to try and catch all the nicknames you throw in the videos such as "One wheel peeler". By the way, you haven't used "all zippy zap like" for removing a bolt in a while. Just sayin. Great explanation on the meter issue!

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