My 2018 Chevrolet Volt has a defective Battery Energy Control Module (BECM). Because of the defect my car lost all propulsion while I was driving. Neither battery motor nor gasoline engine would work and the car would not switch between the two. I was literally stuck in the roadway (fortunately not on a highway. The Check Engine light was on. I was able to barely get the vehicle to a GM dealer, where they diagnosed a defective BECM. The part is apparently on back order and some owners have waited months for the part to arrive. This is a serious safety issue by potentially causing a vehicle to lose power while operating in traffic.

- Plano, TX, USA

There is a good chance my battery energy control module will fail on the highway creating a dangerous situation. Why has a recall not been issued?

- Cresco, PA, USA

Although the battery showed fully charged, the vehicle was not using battery power. At various points I would receive a "propulsion power reduced warning" and the car would lose power. I was driving on 2-lane windy country roads with no passing zones and lots of hills. At one particularly steep hill, I received the warning light and the car started lowing power again. By the time I reached the crest, the car had nearly come to a complete standstill. I have no doubt had I not reached it at that point, the car would have lost all power and begun rolling backward. The speed limit on this road is 55mph with several blind curves and hills, so the potential for a serious collision was great had it begun to roll back. When I reached my destination and turned off the car and restarted it again, it would only shift to neutral. It is now at the dealership where it was diagnosed as needing the BECM replaced.

- Medina, OH, USA

To begin, I will set the scene of my experience. I was traveling east bound on 84 in northeast PA on my way to Long Island for work meetings that day. I was about one hour and a half away from my home at roughly 6am. I was traveling at apx. 70 mph when my car suddenly says "engine unavailable, reduced propulsion." and the fueld tank turned yellow in color on my dashboard. Then a sign said "service soon." My car then COMPLETELY STOPPED WORKING. My speed fell from 75 mph or so to 0 in a matter of a minute, I had no idea what was happening because there were no appropriate warnings such as, "Pull over immediately" or "SAFETY CONCERN PLEASE GET OFF THE HIGHWAY" -I would have taken anything to know that this was an actual emergency and I needed to at least get to a shoulder. I luckily was able to come to a stop mostly off the highway in a shoulder. I was located around a bend, in the pitch black, unable to stay in my car out of fear I would be smashed by a tractor trailer or car that did not see my car suddenly stopped. The car would not go in neutral or anything other than park and I left the hazards on (they eventually failed). I called my husband who drove to me while I stood on the side of the highway for an hour and a half in 30 degree weather. I called the police who were eventually able to put up flares and mark me as a hazard on the road. If there was a car traveling behind me, I would have been killed or seriously injured because I slowed so suddenly and had no way of knowing that this was an absolute emergency. The worst part is that this is the second BECM failure in my volt and I have driven less than 1000miles since it was repaired the first time (which took >5 months). The first time this happened my car was on a quiet town road and my brother who was driving just parked and had it towed. He hadn't thought there were any warnings but he wasn't sure. This time, I could have been smashed on the hwy with little to no warning. I can't believe Im alive.

- Carbondale, PA, USA

Reduc d propulsion power warning while driving in EV mode. ICE started and was able to make it 1/2 mile home. Failure diagnosed to a faulty BECM. Has been at the dealer for 1 month today with no word on when the part or repair will be done.

- Linden, MI, USA

While driving, message suddenly pops up on the dashboard "propulsion power is reduced." Check engine light is light on.

- Norwalk, CA, USA

Ntsb should require a recall of certain Chevrolet Volts. As an owner I received a letter from Chevrolet stating that my Volt 'may have a condition where it could gradually lose the ability to maintain voltage. If battery concerns are not addressed, over time the vehicle could enter a reduced propulsion mode while driving, or lose propulsion, or it may not start.' Losing propulsion while driving is a serious safety issue, and warrants a recall. [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6)

- Sunnyvale, CA, USA

While driving the vehicle at around 60 mph, the 'check engine' light came on and a message saying 'shift to park' appears on the dashboard. Once the vehicle was stopped at the traffic light, the driver shifted to park and was not able to pull down to drive again. Vehicle was stranded in the middle of the road while cars were approaching from behind with high speed. After repeated attempts to press the vehicle 'start' button, we finally were able to pull down to neutral and pushed the vehicle to the side of the road. Vehicle needed to be towed to dealership for diagnosis.

- Elk Grove, CA, USA