So woke up to a “Check Gauges/TC” light on my dash and P063D/P2504 codes on the MM3.
ECM v is showing 12.125, MM3 v is showing 11.8, and alternator v is bouncing between 13-16 at idle but all over the place above idle from 12ish to 18-19.
The truck is idling funny as well.
Am I guessing the alternator has had it?
Thanks, folks!
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