Question about 1997 GMC Jimmy

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Only if very humid or after heavy rain gmc 97

Only if very humid or after heavy rain gmc 97 wont start I lift hood wait till middle of day starts right back up runs fine plenty of fuel presure

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Sounds like moisture is getting into your wiring or even the ecu

Posted on Jun 28, 2009

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Had same exact problem, it was a bad coil. I could not duplicate "no start" problem with water bottle. Replaced coil and problem gone.
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