All I can say is I just had the same issues over 4 weeks with warranty coverage for the 240v harness between the charge port and the control module. GM would not cover it the dealer said even though on page 16 itt clearly said high voltage wires and 3 phase wires are covered with the voltec warranty. After the 2nd level advisor at GM clueless and basically told me to complain to BBB autoline I went back to my dealer and ask the director to assist. He put in a case to GM which was approved in less than 2 days. The dealer cut me a check 1 day after so that they could prove that they paid me back that I paid on my CC. Now the dealer said sometimes GM expects the dealer to pay some. I am unsure how they decide this but even then the Dealer said they would cover the difference. I wantted to reply this to my original thread in this forum but some either deleted it as far as I am concerned and it was a charge fault case as I found no other threads with harness references, just the charge port. BTW they changed my charge port and covered it without issue yet GM did not want to cover the wire that connects it to the control module even with the warranty book clearly showing coverage. One has to wonder.