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  1. 07 Chevy Avalanche 5.3L intermittent miss on different cylinders

    Chevy Avalanche Forum (Escalade EXT)
    I have a 2007 Chevy Avalanche, 5.3L, LT, 4WD that started throwing P301 codes at me. Not knowing the entire service history, I replaced all 8 spark plugs, wires and ignition. It seemed to go away, for a while, but started again a week later. Yesterday, I was having the same symptoms. But, this...
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