So I’m getting ready to move from SC to WV next week which means hauling my 40 foot 5th wheel, so I need to make sure I’m ready to go. Just yesterday, my charging system light came on along with the check gauges light (no codes).

The charging system appears to be only putting out 12.5 volts most times. If I start it a few times, it will sometimes be normal and go back up to 14, but that’s very sporadic. No belt noise, no alt noise, any ideas? Is there a clutch on the alt that could be the issue?

On a side note, I did notice my coolant temp sensor is cracked while I was looking at the alt, but I don’t think that would have any effect on charging?

I could def use some input...