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'02 gmc envoy slt 4x4

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  1. OEM Issues
    I initially had a P0301 code, then after switching the ignition coil from cylinder 1 with the coil from cylinder 3, I get P0300 "Random/Multiple Cylinder Misfire Detected". Is it now safe to assume that the coil from cylinder 1 that is now on cylinder 3 is faulty? And yet another question is...
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