Question about 1990 GMC Sierra

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Firing sequence - 1990 GMC Sierra

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  • pedlinar77 Oct 01, 2009

    I make a tunap replace cap rotor, spark plug and wires set can you help please, the truck is 1990 GMC 5.7 4x4 tankyou

  • pedlinar77 Oct 01, 2009

    I need to put de wire cabel wit spark plug

  • pedlinar77 Oct 02, 2009

    set cap rotor and wires set

  • Douglas Hansen
    Douglas Hansen May 11, 2010

    What engine?

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Firing order 1-8-4-3-6-5-7-2

Posted on Oct 01, 2009

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I probably have the information you need but I need more information on your vehicle such as engines size, make, model, year of vehicle. If you want the picture on firing order send me an email with the information I have asked for. Outdoorsman592003@gmail.com

Posted on Oct 01, 2009

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