2017 Chevrolet Volt

3rd failure of EGR valve (GM part 12691147, superseded by 19436521) on this vehicle. 10/10/2019 at 11,336 mi: Check Engine Light and Driver Information Center displayed "Loss of Propulsion" message; EGR valve diagnosed as cause and replaced by dealer under warranty at no cost. 11/2023 at approx. 30,000 mi: EGR valve failed again; dealer stated OEM part was no longer available from manufacturer due to supply shortage and installed a third-party replacement part; repair not covered, paid out of pocket. 8/26/2026 at 49,864 mi: EGR valve failed a third time; a used, refurbished part was sourced due to continued unavailability of a reliable new OEM part, with repair scheduled for 9/14/2026, again paid out of pocket. This is a known, recurring failure on 2016-2019 Chevrolet Volts, referenced in GM Technical Service Bulletin 19-NA-206. The failure does not present only as an emissions fault — it triggers a "Loss of Propulsion" driver warning, indicating a direct impact on the vehicle's ability to be safely driven. Sustained unavailability of the OEM part is forcing owners toward third-party or used/refurbished parts of unknown long-term reliability, at repeated cost to the owner, in order to keep the vehicle operable.

The contact owns a 2017 Chevrolet Volt. The contact stated that while driving approximately 50 MPH, the "Propulsion Power Reduced" and "Shift to Park" messages were intermittently displayed on the instrument panel. The vehicle lost automotive power and stalled, and the contact pulled over to the shoulder to avoid a crash. The failure had occurred on several occasions. The contact sustained emotional distress from the failure. The vehicle was towed back to the residence and then towed to a dealer to be diagnosed, and it was determined that the battery needed to be replaced. The vehicle was towed to an independent mechanic to be diagnosed, and it was determined that the battery energy control module needed to be replaced. The manufacturer was notified of the failure. The failure mileage was approximately 43,000.

The contact owns a 2017 Chevrolet Volt. The contact stated that he had experienced a recurring loss of propulsion that would occur shortly after vehicle startup, which was attributed to a failure with the Battery Energy Control Module (BECM). The failure caused the check engine, ABS, Stabili-Trak, and Forward Collision Avoidance warning lights to illuminate. The contact informed the local dealer of the failure and was referred to the manufacturer for assistance. The manufacturer acknowledged that there was a Customer Satisfaction Program for the failure, but the vehicle was not included. The contact was referred by the manufacturer to the NHTSA Hotline to report the failure. The vehicle was not repaired. The failure mileage was approximately 95,000.

Chevrolet is denying that my car is included in Special Coverage Bulletin N232432680, because of where it was built. The car is now in Kentucky, which is not a CARB state. Was the reason for a vehicle not to be included in the bulletin because it would be included under CARB? It seems like a loophole they are using not to fix my car. Am I wrong?

While driving down highway rapidly slowed to 15mph. "reduced propulsion" was displayed with significant battery and gas left. Caused cars to swerve and pile up behind me. The car was inspected by dealer and received a variety of U26XXX codes. Dealer states its a faulty BECM. There was no warning lights on before the incident and have had no issues till then. We were lucky this was during the day. Nighttime would have been a terrible accident with oncoming traffic. Dealer is not wanting to cover BECM repair from GM Special Coverage Bulletin N232432680 that was investigated by your organization a couple of years ago.

In March 2026, our 2017 Chevrolet Volt (89,300 miles) would not charge nor start, and had to be towed to an authorized Chevrolet dealership in Portland, Oregon. The dealership diagnosed an internal fault in the Battery Energy Control Module (BECM) producing U26XX diagnostic trouble codes, per GM bulletin #18-NA-261, and replaced the BECM under GM Special Coverage N232432680 — GM's field remedy for a known BECM defect affecting 2016–2019 Volts that causes reduced power, no-start, or no-charge conditions (the subject of NHTSA investigation PE23022).The remedy failed immediately. On the day the vehicle was returned to us (March 26, 2026), the check engine light illuminated while driving home on public roads, and the vehicle failed to charge that same night — the identical condition it had before. It was towed back to the dealership. The dealership's second work order confirms in writing that the vehicle "will not start after previous repairs and is having the same issues," and attributes the failure to the high-voltage battery contactor. The dealership informed us the part is no longer produced and cannot be obtained, advising that the vehicle be scrapped. Safety concerns: (1) after the repair, the dealership returned the vehicle to us as fixed, and we drove it approximately 26 miles home on public highways in traffic, unaware the defect was still present — the check engine light illuminated during that drive. This defect is the subject of NHTSA investigation PE23022 into sudden loss of propulsion, we unknowingly operated a defective vehicle in conditions where that failure could have occurred at highway speed; (2) GM's official field remedy for this known defect (Special Coverage N232432680) failed within hours of being performed; and (3) the parts required to complete the remedy are reportedly discontinued, leaving a known safety defect permanently unrepairable. Supporting documents uploaded: dealer repair orders, and the GM warranty history of the N232432680 repair

While driving at highway speeds over 100 miles away from home with my child in the vehicle, the car experienced a sudden, catastrophic loss of propulsion power and entered 'Propulsion Power Reduced' mode, dropping vehicle speed immediately and creating an extreme hazard with high-speed highway traffic. A full computer scan revealed active diagnostic codes U2603 through U2624, confirming an internal hardware communication failure of the Battery Energy Control Module (BECM). This matches GM Technical Service Bulletin 18-NA-261. The vehicle has over 150,000 miles, but I have only owned the car since January. This is a known, systemic manufacturing defect (cracked internal circuit board solder joints) that creates a critical safety liability regardless of vehicle mileage. GM has refused to remedy the safety defect due to the mileage limit.

I was not going to put in a complaint about this failure but after learning about GM creating a special extended warranty program for this issue, I felt it should be addressed and treated as a recall. The battery energy control module (BECM) failed on my 2017 Chevrolet Volt at exactly 170,000 miles in December of 2024, leaving me in a dangerous position on the roadway and almost causing me to be rear ended due to losing the ability to accelerate. I had no choice but to have the vehicle towed to a dealership where it was eventually repaired with an out of pocket cost of $1900. My vehicle was not eligible for the extended warranty program which I find to be unacceptable.