NHTSA Complaint #11558089 — 2017 CHEVROLET VOLT

On the morning of April 27, 2022, our 2017 Chevy Volt, with what I believe to be a fully charged high voltage battery (was plugged in to charge the entire previous night) and at least a quarter tank of gas, would not start either the electrical or gasoline drive train. The 12 volt battery showed low voltage, so I purchased and replaced the 12 volt battery. The Volt continued to not start in either gas or electric propulsion mode. Checked the OBD 11 codes, and they matched up with what was reported on line to be Battery Energy Control Module (BECM) failure. On May 3, 2022, the Volt was put on a flatbed and taken to Holz Motors in Milwaukee. They verified the BECM failure, ordered new BECM, and was told none were available. Put on waiting list for BECM, and the Volt was repaired 8 weeks later on June 28, 2022. Cost of repair was $2439.63. Volt had 110,875 miles on it and was out of warranty. Not happy to bear the full cost of replacement of the BECM, but felt fortunate that it failed while parked in my garage. There were NO symptoms leading up to failure, and the car was totally unable to move. Overnight voltage drop of the 12 volt battery (the one I replaced also went dead) meant that operation of door locks, etc would also soon have occurred. Outcome would have been much worse if this failure had occurred while driving.