DIY/Walkthrough for VCM/ECU ground wire update
Pin 23 in the blue connector is already taken up by another wire. The service tag on my ECU says 16229684 so I don’t understand why I can’t just do the damn vcm update without so much headache. Ugh!
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aapstealth
Silverado, Sierra & Fullsize Pick-ups
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Jun 7, 2025 3:40 PM





