Question about GMC Sierra 1500

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Driving on highway experienced like a light switch turning on, truck shook and bucked no power popping through exhuast. noticed while I was looking for a spark arc jumping in the dark the header was glowing red figured it to be the spider injection.Replaced spider with new unit nothing changed problem remained the same removed the exhaust from header to check to see if the cat was clogged no change they are 2 years old .Where do I go now OBD read multiple misfire po300

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Fuel pump

Posted on Oct 02, 2010

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Posted on Jan 02, 2017

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