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Author Topic: GM OBD port  (Read 1009 times)

M4wdFab

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GM OBD port
« on: June 21, 2021, 08:14:00 PM »
GM PCM BLUE connector ie 99-2000ish PCM:
pin1 black wire PCM ground
pin19 pink wire PCM IGN hot
Pin 58 green wire PCM OBD data


<add OBD pins>


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