2016 2555HST Cab.
I plowed snow for about 2 hours this morning with no issues. When I was finished, I locked the brakes and after I turned her off, I topped the fuel up (from 3/4 to all the way full).
I came back to her about 5 hours later and now she won’t even turn over!
I have 12.9 volts at the battery, and about the same at the starter. I put a JumpPack on the battery and still won’t turn over.
All the lights, radio, and heater blower work just fine.
I pulled every fuse I could find and they were all good.
It has been about 16 degrees here but she started this morning.
Any suggestions or troubleshooting is appreciated!!!