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rough engine

  1. AvPilot321

    Rough running engine 2007 LTZ

    Hello folks, I'm dealing with a rough running engine in my 2007 5.3L LTZ that is driving me up the wall. The truck has no active, pending, or stored codes to give me an idea where to start. The engine runs really rough at idle, almost like a misfire, and seems to subside some when it warms up...
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