2011 durmax

Hello, I'm new to this and need help. My 2011 durmax will turn off while driving or idling at random times. The stabilitrak and or the traction control will appear on dash . Took to the dealership and they said it's a 5amp wire that was grounding out causing truck to short and stutter. After being in a week they could not find anything and said it was probably fixed. They charged me nothing which I thought was weird.I drove home and it did it once again. Please help I completely lost on this. Has anyone had these issues before

This isn't really one of those things that can be remotely diagnosed. I guess the first place I would start looking though is under the under hood electrical center/fuse panel. I worked with a local Tech on a truck that was doing something similar. I don't recall if it was a no crank/start or a shut off/kill issue, but if memory serves he ended up replacing part of the electrical center.