Question about 1997 GMC Jimmy

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I have a 1997 Jimmy 4x4 4.3 truck, in hot weather excessive heat under the hood and shuts the truck down.Temp gauge reads normal opperating temp. Especially if you turn on the ac. Will start and run after it cools down. New catalytic converter, o2 sensors are fine, new thermostat. Only does this on hot days. Jerry Mcdonald

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Bad ignition modual , and when it cools off it'll start again ! use a napa modual

Posted on Aug 03, 2010

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