Question about 2004 GMC Envoy

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Engine stalls when acceleration

I can be driving down the hwy and when i push the gas to pass a car it falls on its face and wont accelerate its a 2004 gmc 2500 6 liter gas

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Sounds like poss throttle pos sensor prob./ could also be problem w/fuel pump not pumping enough fuel at high speed. poss fuel filter clogging also. have someone check pump pressure.

Posted on Nov 11, 2008

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