1997 GMC Jimmy Logo
Posted on Mar 07, 2010
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97 gmc jimmy service engine light flashes while running and idles rough

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  • Expert 114 Answers
  • Posted on Apr 15, 2010
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Check the ignition wires on the distributor. Then check the wires at the plugs. It may just need a tune up.

tuyen bui

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  • GMC Master 1,025 Answers
  • Posted on Mar 07, 2010
tuyen bui
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You probably have a miss fire, when it flash it tell you that you do have a problem and you need to get imediate attention.
more likely you have a bad plug, wire or coil

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