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P1683 Chevrolet - ive seen alot of post saying replace the pcm ?

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no drivability problems just a check engine light on need to get it smoged

Vehicle: 2001 chevrolet silverado 4.8l

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P1683 PCM is not programmed

This is sorta of true about replacing the PCM, that only if you reprogram the PCM and a P0602 is set right after the reprogrammed then yes you replace the PCM

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