Question about 1998 GMC Jimmy

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I can drive my GMC Jimmy for about an hour before all the sudden it starts slowing down, and eventually just shuts down. I have to put it in park, and turn off the key. Then turn the key back on and its starts right up, what is causing this problem? I have took it to 5 different mechanics and had alot of things replaced on it. We have had everything replaced but the ECU, and the fuel cap.The battery and charging system is in perfect condition.

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Have you replaced the fuel pump? This is a typical sign of a failing pump

Posted on Oct 10, 2010

  • nathan1108 Oct 10, 2010

    Yes the fuel pump has been replaced

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1 Answer

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Could be. You could take the switch off, leave it in the park position, and see what happens when you shift into drive.

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sounds like the computer has a glitch. you might need to go to the dealer to have the computer trained(reprogrammed) or to see if you need a new one.

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