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  1. #1
    Jr. Apprentice
    Join Date
    Jul 2011
    Location
    West Virginia
    Posts
    14

    Default Tahoe PO300 Code

    Could anyone help me with a few issues that I am having with my 05 Tahoe? I have a Random Multiple Misfire code showing on my scanner. I replaced the plugs and plug wires but it still misses. I recently replaced the transmission but I am not sure if that had anything to do with the
    misfires.It was running ok until I replaced the transmission. Does anyone have any Ideals?

  2. #2

    Default

    Quote Originally Posted by Jbugg View Post
    Could anyone help me with a few issues that I am having with my 05 Tahoe? I have a Random Multiple Misfire code showing on my scanner. I replaced the plugs and plug wires but it still misses. I recently replaced the transmission but I am not sure if that had anything to do with the
    misfires.It was running ok until I replaced the transmission. Does anyone have any Ideals?


    Trouble Code....P0300
    may mean that one or more of the following has happened,

    • Faulty spark plugs or wires
    • Faulty coil (pack)
    • Faulty oxygen sensor(s)
    • Faulty fuel injector(s)
    • Burned exhaust valve
    • Faulty catalytic converter(s)
    • Stuck/blocked EGR valve / passages
    • Faulty camshaft position sensor
    • Defective computer

    Also what Brand of Spark plugs did you go with and install???

    MIKE


    99"SILVERADO
    5.3 l 3.73 l G80
    BLACK BEAR CUSTOM TUNE
    SNUGTOP l COLORMATCH l KATZKIN










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