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Electrical gremlins HELP!!

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Old Oct 6, 2024 | 09:22 PM
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hardy03
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Default Electrical gremlins HELP!!

Have the typical reduced power, abs light, traction control, my radio turns off all my gauges go to 0 but the car still runs. Turn it off, then turning it back on fixed the issue. Rebuilt my alternator. As the pictures read, when I test my battery with a multimeter it reads proper charge but the dic reads lower than the meter. These pics are abt 20 seconds apart. Pulled the codes pcm p1626, tcm u1301, bcm 1255 u1096 u1016. Cleaned all the engine grounds found out I was missing the ground behind the head on the driver side. I was told “that ground is just for engine strap” not sure what that means, was planning on re grounding it but not sure where, what gauge wire & what size nut. I also have another issue where sometimes when i put my car in neutral the rpms will float at abt 1200-1700ish rpms & eventually come down after awhile. Sometimes I sputter when accelerating at low rpms as well, plan on cleaning my tb & maf sensor to see if that fixes my issue. Need help pls point me in the right direction. Thanks for any help fellas
Volts directly from battery posts

This is the highest the volts go. After warming up they drop to 13 ish, as low as 12.7
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