OBS_Chummins

Still nothing?

I am researching almost the exact same problem on my 01 24v. I saw on one of the other posts they are talking about shitty factory grounds running to the passenger battery that supply the pcm, vp, ecm, and fuse block. That might be my next plan unless someone has better ideas. It seemed like my truck was more likely to act up when i wiggled the wires going around the alt. Mine also seems to have more issues warmed up like you described though. It also used to have foil on the wire going over the alt to the passenger battery from a previous owner which also brings me to this conclusion. Possibly something in the alternator heating up and causing electrical noise as it warms up? You wouldnt think it would make it difficult to restart though. Mine either fires right back up or doesnt fire at all.