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  1. C

    DTC code C3300 on 2009 Dmax...help

    Scanned 2009 duramax gave DTC code C3300??? Can not find what this relates to. Help please
  2. C

    LMM elevated idle will not turn on

    Scanned the truck and it came up with DTC code C3300? Appears that I can only find DTC codes that start with a P??
  3. C

    LMM elevated idle will not turn on

    Ya it shows up on the DIC, but still says off no matter what I try. Also, did the same thing the youtube video asks and it repeatedly says OFF. Cleared all the DTC codes and it still does this. Might run it into the dealership I guess.
  4. C

    LMM elevated idle will not turn on

    how do you do it right?
  5. C

    LMM elevated idle will not turn on

    going to elevated idle on the dic and pressing check mark and it will say. Elevated idle off. Then if you press it again it says OFF selected. Going to scan it tomorrow when I get my EFI scanner.
  6. C

    LMM elevated idle will not turn on

    I have a 2009 LMM and my elevated idle will not turn ON. I have used both the DIC to try and turn it on and also pressed the gas in and tap the brake 3 times. It will pop up saying elevated idle but WILL NOT switch to the ON setting. Continually says OFF after trying each process. My check...
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