NHTSA Complaint #11603576 — 2017 CHEVROLET VOLT

I was driving down the highway at normal speeds when I noticed the engine temperature began climbing out of the blue, and eventually the CEL light came on before the dashboard read "Propulsion Power Reduced" and eventually the engine stopped entirely and I had to coast to an area on the side of the highway where I could pull over. The battery-only part of the car was drained but there was plenty of gas in the tank, so my only way out was via the ICE. I turned the car off, waited for it to cool down, then turned it back on, only for the same issue to occur within another couple of miles of highway driving. I had to repeat this process until I was able to get to an exit and coast to a business that would let me recharge the battery enough to drive on battery-only where I could park it overnight, as I was not near my home. Eventually I had to get the car towed to a dealership, where I was told it was either an EGR valve or EGR cooler that needed replacing. After the dealership refused to provide any specifics regarding the diagnostics in writing, Chevrolet corporate informed me that it was an EGR valve that was requested and is on global backorder. This issue has not been resolved for a year now, and put me in the extremely dangerous position of losing power entirely on the highway with almost no warning, and no statements to date that would have prepared me to deal with this issue.