NHTSA Complaint #11418055 — 2017 CHEVROLET VOLT

At approximately mile 370 of a 390 mile trip while operating the engine in hold mode, the engine overheated, requiring me to pull over to the side of the road, wait for the engine to cool, and then proceed to the nearest Chevrolet dealership using the battery in order to be repaired. The first warning I received was a "reduced engine power" message. I scrolled through the status pages and found the coolant temperature to be 230 deg F. I continued to monitor the temperature until a few minutes later received the overheat warning and pulled over to the side of the road. The vehicle is a 2017 Chevrolet Volt with approximately 15,000 miles. The dealership found the EGR valve (part # 12691147) to be internally shorted and replaced it. From various internet reports this appears to be a common occurrence for this model year. This is a safety risk in that it is most likely a known defective part that fails prematurely totally unexpectedly.