Question about Chevrolet C1500
TRY swapping back to your factory coils. I believe you are gonna find these coils are not compatable with the gm system. I assume truck is running fine? also the plugs may not work well with truck but this would show a po300. computer is designed to be able to tell the resistance in the coils and the amount of enegy used. when you swap with different components it messes with the values it expects to see. helped a corvette owner with similiar issues here:
Posted on Oct 02, 2008
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Posted on Jan 02, 2017
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