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A couple C6500 problems

Discussion in 'Medium-duty Truck Forum' started by jimstrucks, Feb 1, 2014.

  1. jimstrucks

    jimstrucks New Member

    I am new here and would like to thank everyone in advance on what seems to be a pretty good board.

    I have a 2003 GMC C6500 w a cat 3126 that has a couple issues
    1- the glow plug/intake heater light stays on I took it to a shop that does a little medium duty work and they said something about one side of the intake heater solenoid having power and the other had no power. We have an oil boom here now and you can't get much help from the parts department at the CAT dealer as they are all kids. So I was wondering if anyone had any knowledge of this problem.

    2- The oil gauge on the dash reads 40 psi but the ecm reads 6 psi, are there 2 oil sending units? This makes the maint req light light up.


    3- The check engine light is on and I don't have a code reader for these bigger trucks is there a way to get into a diagnostic mode to flash a code with the CEL.



    Thanks to all I would really appreciate the help.

    Jimmy
     

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