My father-in-law has a 2014 6.2L and he gets a traction control light with a big wrench (his description). If it stays on too long the ac turns off the heat comes on. He said while sitting it feels like the truck is jerking while stopped. The only solution is to turn off the truck and let it sit for a few minutes. I did run the codes using Forscan, there were a bunch of faults all related to traction control and abs. I reset them and the first one to come back almost immediately was Code:U0001- High Speed Can Communication Bus. Any tips to further troubleshoot or check, Please advise.