I had posted a thread about a year ago https://gm-volt.com/forum/showthread.php?311170-Charge-Cord-Theft-Alert-Not-Working. I recently had to have my vehicle receive its annual state inspection and had a few issues addressed, this being one of them. It just so happens that their 2017 loaner Volt had the same issue. After a few different attempts to make the alarm function as it should as recommended by a technician in the head office, they performed the following procedure which corrected the problem: Applied dielectric grease to connectors and HPCM2 to correct cord theft. I was told there was a moisture condition inside the connectors. I also learned, and I am sure other members might not know this, but it was demonstrated to me that the alarm only functions with the 120 volt charger. It does not function with a 220 volt charger or if you use the OEM charger at 220 volts.