Tuning
Your car has an OBD2 PCM using flash memory, as far as I can make out your device works only with OBD1 ECM. But I could be wrong. What exactly were you trying to do? Be careful not to scramble up the PCM. There are certain routines that must be left alone, if the code is damaged the PCM won't respond anymore and you wind up buying another one or paying a GM dealer with a Tech 2 tool to reset it. Either way it is expensive.
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