Posted on Oct 05, 2009

1998 gmc sierra ext cab v8

Mine does the same thing going down the road can feel it idle up an down like the ac pump is on im thinking its either a fuel filter or it needs a set of plugs and wires

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Anonymous

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Posted on Oct 05, 2009

Anonymous

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I would say its a sensor in your tranie

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Done an alt. change after doing a tune up truck ran than just shut down now will not start

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