2000 Other Chevrolet Models truck running bad

2000 CHEVROLET
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ALLPRO
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Electrical problem
2000 Other Chevrolet Models 6 cyl Two Wheel Drive Manual

I have a 2000 chevy 1500 full size truck and when you hit the gas peddle it goes really rough and the computer codes are pullling up catalyst system right and left bank low effieciency, radomn misfires, number 5 misfire. I have replaced the wires, plugs, rotor and cap and it still running the same! Help!
Dec 27, 2009 at 5:53 AM
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DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
Would you post codes in P0xxx format? also what is fuel pressure and has engine compression been checked?
Dec 27, 2009 at 6:09 AM
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