Cleaned yer Battery Posts & Clamps latley..
??? they r clean yes
Not a 6.0 guy.. but 48v at the FICM seems right.
Yeah I tested while cranking.It shows 48.2 well within spec.
The batteries show 12. each.they did start to slow down tho after all of the cranking so I have them on charge.This wouldn;t be the HPOP would it.Boy I hope not.It never had a "lope" to the engine.Not sure if that is a sign of a bad hpop or not