Truck Repair: ISX dies

Question
We have a ISX dpf motor 2009 wont stay running starts might run 1 min might run 25 mins when it shuts down cycle the key it will start right back up.HELP HELP had this unit in 2 shops today no codes cant fix they claim

Answer
i would check your power wire for the ecm from the battery on up to the ecm sounds like a wire issue there could be a rub spot could be a bad wire inside that gets a little heated and looses connection. Or could be  a bad connection. Does it trip any check engine light or codes?