I've looked the harness over and did wrap and zip tie it up everywhere. I forgot to mention I only have the issue when it is warm out and the truck has been working hard. Al winter it was fine. Im going to check the fuse block though. Thanks!
I have a Allison trans with a code 003 002003 31 SPN. I found it is supposed to be a power from TCM to ECM but I can fins a wire from one to the other. Can anyone help me out or have you seen this code before?