I understand that the transmission shop and/or dealer doesn't seem to know what they are doing, however, I just want to be able to tell them that I swapped out my PCM with a known good one.
If it fixes the problem, then good deal, if it doesn't I can take it back and tell them it didn't, and there's something else wrong with it......fix it right this time.
So, would it damage a known good PCM if I swapped it out to see if it will "fix" the problem?
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