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New owner, a few questions

Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by kennya, Apr 30, 2012.

  1. kennya

    kennya New Member

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    Bought a 2009 4x4 over the weekend knowing about a couple of problems. First, I got the Tighten Gas Cap DIC message. Loosened it and tightened it back up, no more message. Got it again today and the check engine light is on. Was close to the local Chevy dealer so picked up a new gas cap, but the check engine light is still on. Does it take awhile to go off?

    Second problem. By looking at the valve stems on the tires, can you tell if the TPMS Sensors are present? I ask that cause on my vette and Camaro, the stems are metal. The ones on the truck are not, they are rubber and flexible. I ask this because the Service TPMS DIC message is present and the lighted icon on the gauge blinks for a bit and stays on. The tires are Kuhmo, not goodyears, so my first thought is that they didn't put the sensors back in when they were changed, or they didn't program them back to the truck.

    My vette has the DIC, and I am able to go through a lot of info with the car, are the Silverado's the same? My truck does not have the DIC menu buttons, I have to use the trip reset stem.

    Any help is GREATLY APPRECIATED!!!
    #1
  2. Shiloh24

    Shiloh24 New Member

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    If your truck is a half ton with P rated tires make sure all the tires are set at about 35 psi. Either there are no sensors, your tire pressures are all different, or they broke a sensor putting on the new tires. I think the maximum difference in pressure is 5 psi before the light sets off. Once you set all the tires at 35 take it for a drive and if the light doesn't go off you probably have no sensors or a broken one.
    Last edited: Apr 30, 2012
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  3. kennya

    kennya New Member

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    Thanks Shiloh. I plan on doing the re-learn for the TPMS this weekend, but thought I would post the question anyway. Hoping there would be a way to tell, guess I was wrong.
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  4. Shiloh24

    Shiloh24 New Member

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    All the re-learn is going to do is learn the position of each tire it won't make the light go off. I would still go ahead and do the relearn though that way once all your tires are set at 35 psi and the lights still on you can take it to get the codes read and it will say which sensor(s) are not working.
    Last edited: Apr 30, 2012
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  5. kennya

    kennya New Member

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    So would I need to get the codes read at a dealer or could I take it to AutoZone?
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  6. Shiloh24

    Shiloh24 New Member

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    You could try autozone. Im not sure if they can read Tpm codes or not.
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  7. kazoopolaris

    kazoopolaris New Member

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    0446= EVAP solinoid more then likely its the cause..... clicky>>>>>>

    or google it.....
    Last edited by a moderator: May 1, 2012
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  8. mfleetwood

    mfleetwood Moderator

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    Last edited: May 1, 2012
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  9. kennya

    kennya New Member

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    Kaz, thank you, I will look it up.

    Fleetwood, thank you! I am ordering that with in the next day or two....

    To give you all an update. My coworker used to be a car salesman and he told me to just remove the positive battery cable for 15 or 20 minutes. I did and sure enough the lights are gone. I figured they would be, but he said that should reprogram the TPM sensors (he said that's what a lot of dealerships do). Anyway, I thought I would give it a try before I go and spend money on getting them checked at the dealer. The check engine is off as well, I am hoping the new gas cap will keep it off.
    #9
  10. mfleetwood

    mfleetwood Moderator

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    Thanks for the update! ....let us know how it goes.....
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  11. kennya

    kennya New Member

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    Another update. The check engine light came back on the other day. Was able to take it to AutoZone and get the codes read, they were p0446 and p0455. I got it into the dealer later that day and they did the smoke test and could find no leaks anywhere. The reset it and I was off. Came back on yesterday...ugh. Called and taking it in on Wednesday, hoping they figure it out this time.
    #11
  12. mfleetwood

    mfleetwood Moderator

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    Hope they are able to find and permanently fix the problem. Does your truck still have low enough miles to where this stuff is covered under warranty? If so, at that's a help.
    Last edited: May 8, 2012
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  13. 08_rado_rocker

    08_rado_rocker New Member

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    Glad someone introduced you to this.. i have personally done the DIC upgrade on my 08 and it works fantastic, all plug-n-play and only took a total of literally 3 minutes TOPS to install, just need two (one can be used) small screwdrivers to get the headlight/dimmer switch block off the old panel.

    Also, welcome to the club and congrats on the purchase!
    :sign0021:
    #13
  14. kennya

    kennya New Member

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    Truck has 48k miles, might still be in luck. Figure i will have the truck there around 3:30 or so. Sure hope they figure it out this time. After i am done there i am dropping it off for a spray in bedliner. Gonna order the DIC button panel this evening or tomorrow.
    #14
  15. aloxdaddy99

    aloxdaddy99 New Member

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    Congrats on the new truck. Hope you get the issues fixed.
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  16. kennya

    kennya New Member

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    Ok, well, it's the evap canister. They can put in a new one and have me back on the road for $665.00. Please tell me the part number and that I could do this myself....
    #16
  17. JayBee

    JayBee New Member

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    Man that just sounds like it is too expensive to me. Maybe I am wrong and hopefully others here have experience with this and can lead you in the right direction. Hopefully you can do it yourself. Good luck!
    #17
  18. Pikey

    Pikey Moderator

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    Check out some websites like GMpartsdirect. I found it for about $120 there
    #18
  19. kennya

    kennya New Member

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    After much discussion with the wife and a lot of research, just going to have the dealer take care of it. Taking it down there in about an hour...
    #19
  20. SurrealOne

    SurrealOne Former Member

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    That's probably wise from a warranty perspective...
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