deleted lolNeutral safety switch?
i did not.. was in a rush.. makes sense lolReading is the easy part. I've only had trouble on writing, but it should be easy in an old truck with nothing but the PCM on the bus. Did you try low speed?
this was it....Try putting a battery charger on the truck before you read or write to it.
Couple glaring problems. your control module voltage is fluctuating between 10-12 volts. It should be 13.2+ I think your alternator isn't charging, your battery is bad, or you have some questionable connections or all 3.ok so now I can read and got it...sweet..
here is the logging. Once closed Loop happens, stumbles and all kinds of issues...