1998 GMC Sierra

1998 GMC SIERRA
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SUMMERFIELD
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1998 GMC Sierra V8 Four Wheel Drive Automatic

My truck sputters and bogs down when I step on the gas like when I am passing another vehicle or when i am going up hills. Fuel pump is fairly new along with spark plugs, cap and rotor. What could be the problem?
Sep 6, 2010 at 9:52 PM
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