2016 Chevrolet Volt: sudden loss of power

Filed Jun 30, 2026 · Fuel system · TX

The Battery Energy Control Module (BECM) on my 2016 Chevrolet Volt has failed. The vehicle and the component are currently located at my home address and are available for inspection upon request. As of writing this now. This failure caused the vehicle to enter a "reduced power mode" and subsequently resulted in a no-start and no-charge condition. The sudden loss of propulsion power presents a severe safety and crash risk, as the vehicle can lose motive power and stall unexpectedly while in transit. Prior to the complete failure, the vehicle displayed a Check Engine Light and a "Reduced Propulsion Power" message on the dashboard. The local Chevrolet dealership has inspected the vehicle, pulled the associated diagnostic trouble codes, and officially confirmed that the BECM has failed. General Motors has already acknowledged this specific safety defect through Special Coverage Bulletin N232432680, which extends BECM warranty coverage to 15 years or 150,000 miles to prevent sudden loss of propulsion. However, GM corporate and the dealership are refusing to honor this bulletin. They are denying coverage due to an administrative database flaw because my vehicle's under-hood VECI label designates it as an original California (CARB/PZEV) vehicle, GM's system excluded my VIN from the Special Coverage bulletin automation. Furthermore, because the vehicle is currently registered in a non-CARB state (Texas), the original CARB warranty is considered void. GM is using this internal database loophole to deny repairing a documented safety defect.

Filed Mar 11, 2026 · Fuel system · OR

After experiencing loss of power and loss of propulsion on the highway, took the car to Tropical Chevrolet in Miami Shores, FL. after diagnosing the car for $287.37 (credited to the estimate total of $3101.20), the dealership replaced the Battery Energy Control Module and bled the battery pack cooling system. We paid the bill ($2665.89). On January 4, 2026 the check engine light came on again when the propulsion was reduced again, while driving on a highway. Tropical reported that the cause of the failure was their failure to replace or do the original repair at all. They replaced the exhaust gas recirculation valve and refilled the cooling system. The parts should be covered by warranty. We filed a claim with GM 2 months ago and still have not been reimbursed.

Filed Jan 14, 2026 · Electrical, Fuel system · IL

Battery Energy Control Module Malfunction. It is a known issue with this system failing on the chevy volt. There is a service bulletin on this problem. 18-NA-261 is the service bulletin. The car will not start and when it does start it has loss of power while driving. Chevy is only fixing certain VIN numbers even thou it pulls up the same codes in their bulletin. Chevy only gave extended warranties to certain VIN numbers also. Extra warranty bulletin N232432680. This is a major component for the high voltage battery which drives the vehicle. The dealership wants $5000.00 to repair this.

Filed Jan 14, 2026 · Electrical, Transmission · MN

While I driving in the past week, a warning that "propulsion power reduced" appeared on my dashboard several times. The last time that I had driven the car, the heater would not turn off, and the smell of burnt rubber filled the car and then dissipated soon after. The car would only run in it's gas engine mode, and not switch over to electric mode, as it usually would. The next morning, the car would not start. The dash board would light up as if the car started, but when I shifted into drive, a warning appeared on the dash, "Shift to park", as it would when the car is not running. I could not start the vehicle. After plugging the vehicle in, a warning appeared on the console stating that "Charging is not available". The car was towed to the dealership. Their diagnosis showed that the Battery Energy Control Module had failed and must be replaced. They later confirmed that an electric cable needed to be replaced that was "corroded", but they could not confirm the cause of the corrosion because the cable was disposed of already. After researching online, I found that GM issued a Special Coverage bulletin: N232432680, citing a common malfunction of the Battery Energy Control module in 2016 to 2018 Chevy Volts that "causes a reduced power mode, a no start condition, or a no charge condition." The Special Coverage was to extend the warranty to 15 years or 150,000 miles. After inquiring the dealer about the Special Coverage, they claimed that our car is not covered under the warranty. After calling customer service, they claimed the coverage comes from the federal safety agency, and GM only issues orders by VIN, and therefore cannot cover the issue. After calling the federal safety agency, I was told the special coverage is not a national recall, and is internal to GM. The GM dealership still claims that the control module on our car is not covered under the warranty, and have denied the request for a manager inspection or investigation.

Filed Dec 6, 2025 · Engine, Fuel system · CA

Component/System Failed: The engine of my 2016 Chevrolet Volt experienced a sudden internal crack, leading to complete engine failure. The engine is available for inspection upon request. Safety Risk: The engine failure rendered the vehicle completely inoperable, posing potential risk if it had occurred while driving. Sudden loss of engine power could have caused a crash or left me stranded in traffic, endangering myself and others. Problem Reproduction / Confirmation: The failure was confirmed by a GM dealership, which performed a full inspection and documented the engine crack. The dealership verified that the crack was sudden and not caused by negligence or improper maintenance. Inspections by Others: The vehicle has been inspected by the dealership, and all reports are available. I have also submitted the issue to GM corporate for warranty review. No police or insurance representatives have reviewed this, as this was a mechanical failure with no collision. Warning Lamps or Symptoms: No warning lights, messages, or unusual symptoms appeared prior to the failure. The engine appeared to operate normally until the sudden failure. Upon failure, low oil and low propulsion error message appeared on dash. Current no dash lights are on in the vehicle. Assessment of Cause: Based on dealership inspection and documentation, the failure appears sudden and possibly related to a defect in emissions-related engine components. No external damage or user error contributed to the failure.

Filed May 28, 2025 · Electrical · TX

•Vehicle lost power while driving on the highway at speed. The vehicle would not run with gas engine power or EV charge basically died on the road in traffic. After coming to a stop safely but not without some close calls vehicle would not start even with car having fuel of two types in it. •The battery charge would not register, and the car would not start for a little while. Display showed nothing and was only making a dinging sound. Around half hour later the vehicle started, and I drove it to my home and parked it. I have not been driving it as it seems like a safety concern with the battery system and not feeling reliable. I had tried to charge it after the initial event and it did not charge. I did only a little research on cost for battery issues and the cost made me very put off even looking at the car. The car has been sitting sense August of last year. I took the car into a GM repair shop a week ago and the shop told me that the BECM module is weak. I looked this up and found that there is a lot of people having the same issue! Also, there are 19000 cars just like mine who got a recall or Special coverage. I am told I don’t meet the requirements for the coverage even though my car has the issues. They say my VIN is not on the list, clearly this special coverage did not go far enough. There appears to be some gaps in the coverage of this issue there are tons of people having this issue a full recall should be investigated and enacted there is clearly a problem that should be addressed. The fact that most cases do not happen when the car is running seem to put this on everyone’s back burner but people are being harmed financially while GM uses loop holes to not address an issue that could cost people there time, hard earned money, lost wages, even there life if this malfunction causes accidents. There was and is clearly enough to warrant action. Letting GM get away with a half Hearted attempted at fixing this is a crime.

Filed Dec 16, 2024 · Electrical · PA

Car lost power in 02/2024, was taken to dealer. Issue was not addressed properly. 12/2024 the car would not move, towed to dealer, estimate $2000 to replace becm, know issue for these vehicles.

Filed Nov 6, 2024 · Electrical, Fuel system · MD

My experience is proof for the investigation on “loss of motive power, including a stall, reduced power state, and/or a no-start condition due to the Battery Energy Control Module (BECM).” My safety and the safety of others were affected because the reduced engine propulsion caused me to drive at a max speed of around 50 mph, and eventually the car left my stranded a few weeks later when it would not start at all in a parking lot. The gas engine would run at an extremely high RPM to make up for the failure of battery propulsion. The dealer covered the work under warranty. The work was performed during the pandemic chip shortage in 2022 and my car was at the dealership for two months from about August to October. The check engine light would come on sporadically before the problem started, and when the failure would occur, I would get a “Propulsion reduced” message in the driver screen and the gas engine would kick on to an extremely high RPM even when the car should have been running on battery. Accelerating from a stop to a normal speed would sound like you are flooring down the accelerator to get on a highway on-ramp. I no longer have the paperwork to confirm this, but it was performed at the Fort Collins (Colorado) Dellenbach Chevrolet dealer, it may be possible for me to get the paperwork, but I no longer live in Colorado. The process went all the way up to corporate Chevrolet before the warranty was honored, and I was compensated with company points.

Filed Oct 31, 2024 · Driver assistance, Fuel system · CA

With PHEV battery at 0%, it's normal for the gas engine to kick in. What's not normal is when the infamous BCEM propulsion system failure happened. First, it shut off the ICE engine and reverted to EV mode when I have 0% charges left. The system also reduced power to the car. Luckily, I wasn't on the freeway, or this could end up really badly. I was at the point where I could no longer accelerate and was coming to a stop really quick. Because I was still on local street, was able to safely pull over to the side of the road and turned off the system completely. I waited a minute or 2, turn the car back on and the engine kicked on immediately. Please have GM issue a recall for this problem TSB 18-NA-261 because if this happens to someone on the freeway when their battery is at 0% and BCEM shuts off the gas engine with loss propulsion failure, it can result in serious accidents and deaths.

Filed Oct 11, 2024 · Electrical, Fuel system · OH

My 2016 Chevrolet Volt loses power while driving and the "propulsion power reduced" warning message appears. This has happened multiple times in the past few weeks and it is very dangerous losing power while traveling. After taking it to a Chevy dealer for service, they advised that it was an internal failure of the BECM (battery energy control module) and that it would need replaced. After searching online it appears that this is a common issue with the Chevy Volt models from 2016 - 2019. So much so that GM extended a special warranty to cover this failure up to 15yrs and 150,000 miles. Unfortunately for reasons I still don't understand, I was informed that my vehicle is not covered under this special warranty despite it specifically being the year and model that is affected. My vehicle currently has 93k miles and was purchased in 2016. So I am just outside the original 8 year 100k mile warranty but thought I was covered under this new special coverage given that this is an issue that GM is clearly aware of. I was also shocked to find out that there apparently was never a recall for this issue. My wife and child normally take this vehicle across town at highway speeds and I'm lucky the issue only happened to me. I fear for those who brought their vehicles and are not aware of the issue and will be told that theirs isn't covered as well.

Filed Sep 12, 2024 · Fuel system · OK

Vehicle has been to dealership numerous times starting in 2021 to address issue with loss of power between ev and gas. No results were found, but I believe the BECM was failing for awhile. Vehicle has continued to lose power until this year check engine light came on. 12V battery was changed and no change. Dealership said vehicle was fixed. It barely made it home and light came back on. Loss of propulsion message. Vehicle loses all ev charge, will not go over 35 miles per hour, barely makes it up a hill. Brakes and steering are hard to control. Vehicle is not included by VIN for the BECM replacement. Dealership is now saying that is the problem. Dealership is quoting $2500 for the fix. This is very dangerous to drive this vehicle. You have no warning of when car is going to stop or lose power. This is a vehicle that was supposed to be for my teenagers to drive and it is not safe at all. This has been discussed numerous times at the dealership with no solution.

Filed Aug 15, 2024 · FL

I was driving on the highway when suddenly the car lost power, it was very dangerous. I had to glide to the side of the road. The car will not move forward or back after I stopped, it had to be towed.