Question about 1994 Chevrolet C1500

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1994 k1500 4x4 5.7 speedo goes to 100 when started

I was told I may have a short. I need to know where to look in the dash? The speed sencur on transfer case. I changed speedo cluster still does the same thing. cant keep buying parts geting exspesive. I also changed brain.where would you sugest I look. thank you.

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  • customdanz Nov 13, 2008

    Your comments have been helpful but istill have the same problem.

  • customdanz Nov 13, 2008


  • customdanz Nov 13, 2008

    How many

  • customdanz Nov 13, 2008

    How many comments are

  • customdanz Nov 13, 2008

    How many comments are needed

  • yadayada
    yadayada May 11, 2010

    I would suggest you calm down a little, this keyboard very seldom gets electrical problems like yours fixed, that is a hands on job for a pro.


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As soon as key is turned on gauges self test then return to zero on some vehicles.

Posted on Dec 03, 2008

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Sounds like it may be a faulty speed sensor. This sensor is connected to the transmission and the speedometer cable connects to it as well. I'm not 100% sure, but if it were to go bad it may trip the check engine light. Hope this helps, good luck

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