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major problem with K 2500

Discussion in 'GM Powertrain' started by MikeGray, Mar 14, 2011.

  1. MikeGray

    MikeGray New Member

    I have a 1995 K2500 that will stop shifting (no rhyme or reason) the truck will not upshift the tack will not operate also the speedometer will not work. Does anyone have any ideas. I have replaced the electrical egnition switch, ECM, neutral safety switch. Any help will be appreciated.
    Last edited: Mar 14, 2011
  2. DAREDEVIL

    DAREDEVIL Rockstar 4 Years 1000 Posts

    it definatly sounds like a electrical problem.....i would start checking for bad grounds and also check if you have power everywhere !!!
    loose wire or so !

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