2018 CHEVROLET VOLT Complaints

The contact owns a 2018 Chevrolet Volt. The contact stated that while driving at an undisclosed speed, the message "Engine Not Available" was displayed and the vehicle stalled. The vehicle was not able to be restarted and was towed to a local dealer where a reset of the engine code was performed. The contact stated that the failure reoccurred, and the vehicle hesitated while accelerating. The contact was able to pull the vehicle to the side of the road, and the vehicle was towed to the local dealer where it was advised that the battery of the engine control module needed to be replaced. The vehicle was not repaired. The contact related the failure with the Technical Service Bulletin: 18-NA-261 (Malfunction Indicator Lamp Illuminated and/or Intermittent No Start with Battery Circuit DTCs Set); however, the vehicle was not included. The manufacturer was made aware of the failure; however, no assistance was provided. The failure mileage was approximately 150,000.

Shift to park issue. Known issue with 2018 Volts but dealer is charging diagnostic fee when they know it is the issue because it displays shift to park when you try to shut car off. There is a bulletin stating this 19-NA-206. It states the Voltec warranty covers this but dealer states it is not. Dealer is West Herr Chevy, East Syracuse. Had to wait two weeks with the problem and then they left me stranded at the dealer ship because they did not fix it. This dealer had computer issues and sent service home early and left me without a ride home when I returned. GM needs to notify these dealerships that this problem is covered.

While driving on the highway, the EGR valve in my car malfunctioned, initially causing my dashboard to read "Propulsion Power is Reduced". After continuing to drive the car, the dashboard read 'Engine not available, service soon', where it stalled and we had to restart the car. After restarting, the car went into EV mode with significantly reduced speed. Our safety was put at risk due to the initial stalling and subsequent reduced speed on the highway. The problem has been reproduced since the initial incident and our dealership confirmed the problem relating to the EGR valve which continues to blow fuses when the engine is over-exerted while using gas. The dealership said that this is covered under warranty however, there has been a 5-year back-order on the part and they are refusing to offer any loaner car or compensation for a rental car.

The contact owns a 2018 Chevrolet. The contact stated that on several occasions while driving at various speeds, the vehicle lost motive power with the check engine warning light illuminated. The vehicle was steered to the side of the road and restarted each time, but the failure persisted. The vehicle was taken to the dealer where it was diagnosed that the EGR valve needed to be replaced and 40 unknown DTC codes had been retrieved. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 55,000.

When attempting to power down car after shifting into park, message states shift to park. Car cannot be locked or secured.

While driving in August 2023, the vehicle seemed to lose acceleration power and a warning regarding the reduced propulsion appeared. The vehicle was taken in to the dealership and the diagnosis was that the EGR valve needed to be replaced. Still waiting on the issue to be resolved as GM doesn't seem to have the part required to fix the problem.

The "module" that controls the engine's charging of the battery failed and the car quickly went into reduced power mode and then quickly shut down altogether this happened within a mile or so. Fortunately this happened on a parkway where I could get to the curb safely. However, I had just come off [XXX] in St. Louis with very heavy 65 MPH traffic, and had it shut down a few miles earlier I would have been in real trouble. I understand the NHTSA has opened an investigation into this type of problem with the Volt, but I have also heard that G M is reporting they have the parts to fix cars that are affected. This is not true! I live in Lenexa, KS, and my Volt is at ELCO Chevrolet in Baldwin MO. The service representative told me on [XXX] the part I need is "on backorder" and he has no idea when the part might be supplied to him. Apparently, GM does not have this part anywhere in the world, a part without which the car will not move. This is inexcusable! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

My 2018 Chevy Volt displayed a warning message of "Propulsion Power is Reduced" on the dash when I started the car in a parking garage on Saturday, March 9th around 10am. The car would not drive normally and made a strange noise. I had to stop and start the car six or so times before it drove normally for me to get home. Had this happened at high speed, it could have caused an accident or worse. I contacted the local Rockville, MD Chevrolet dealership and they ran the diagnostic test on the BECM and HPCM2 systems and performed battery capacity reset. I do not believe this software reset will correct the technical issue. According to the dealership records, such a software reset was performed in 2021 by the previous owner before we purchased the car second hand in July, 2022. The dealer would not replace the BECM unit but there is supposedly a special coverage bulletin issued by General Motors. We need the unit replaced ASAP for safety.

Ten mile trip with 60% battery charge (about 30 mile range indicated, full tank of gas). Check engine light appeared. "Propulsion Power Reduced" appeared and cleared after restart at traffic light. Total loss of power at highway speed, "Shift to Park" appeared. "Power Off" appeared on energy display, coasted to shoulder and was unable to restart vehicle after multiple attempts.

While driving, an engine warning "Reduced propulsion Message" came on. Then it said " Engine Unavailable". The car would not go to gas engine. We panicked as we were 20mi from home and only had a few miles of electric left. I was able to drive to the nearest Chevrolet Dealership. It has been sitting there parked for 2 months. Uncharged. We are told that the problem is the EGR valve but no part is available anywhere. It is a known problem but GM has no parts available to fix. I am not getting any answer as to how long it may take to get the part. Meanwhile, I am without a vehicle. I only have approx 25,000 on the car. We have not been given a replacement car or been given any clear response from GM or the Dealership as to how long this may take to locate a part.