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  1. R

    engine hesitation / stumble when i hit the gas

    Man you know something your right..... my truck ran great before I put this damn. bully dog cold air intake on ... thanks chris.
  2. R

    engine hesitation / stumble when i hit the gas

    2002 suburban 5.3 v8, 153000 miles runs great except for when I hit the paedal from dead stop it stumbles really bad then picks up and go, I changes plugs and wires, new air intake system, new MAF, tps, cleaned iac, cleaned intake , new knock sensors, new gaskets, new flow master...

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