Codes U0073 and P0300?

2009 PONTIAC TORRENT
3.4L • 4WD • AUTOMATIC
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SHROMEN
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Please help. need the engine ground wiring diagram or really the all of the engine wire diagram to the PCM. I'm thinking it has a bad ground or some sort of issue the wiring somewhere. i just can't figure out were. i don't know what wires are what. Please help. thank you.
Sep 18, 2026 at 3:46 PM
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