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help. 6.0 p0300

Discussion in 'GM Powertrain' started by zacharrigo, Mar 7, 2011.

  1. zacharrigo

    zacharrigo New Member

    hey i have a 2500hd with the 6.0 and i am getting a p0300 and p0200 code. i have put new wires and new coils on as well as tested all the fuel injectors and they all pulse and drop 20 psi when pulsed. any ideas would be great thanks
  2. stephan

    stephan Rockstar 4 Years 5000 Posts

    Did you also replace the spark plugs to try & cover your P0300 code? What type of plugs do you have in it?
    For your p0200 code did you circumvent the controll to pulse the injectors? How did you check them
  3. 2COR517

    2COR517 Epic Member 5+ Years 1000 Posts

    Definitely new plugs. AC Delco gapped at .040".

    Have you cleaned the MAF? Are you running a K&N?

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