2018 CHEVROLET VOLT Complaints

I was driving my 2018 Chevy Volt at about 30 mph on EV mode. The battery was at 50%, the car was performing normally. Then the battery jumped to 100%, the check engine light came on, and the vehicle lost power. I was in rush hour traffic and unable to get the vehicle to go faster than 5-10 mph. I switched to "normal" mode to engage the gasoline engine, hoping this would help but it did not. The gas engine RPM fluctuated wildly and did not restore the ability to accelerate the vehicle. I was still unable to go faster than 5-10 mph. I was a few blocks from home and managed to get home safely. The engine code was P1E00. I put the vehicle on the charger and it seemed fine the next day. This exact situation I ran into - reduced engine power - is addressed in Special Coverage N232432680, which includes this vehicles VIN. I took the car to the GM dealer today and they are telling me that the car is fine, they can find no problems. I mentioned that this issue is covered under Special Coverage N232432680, and was told that unless they can reproduce the issue in the shop, that they cannot apply Special Coverage N232432680.

The vehicle (2018 Chevrolet Volt) is experiencing an intermittent failure of the Battery Energy Control Module (BECM). Diagnostic trouble code P1E5B was stored in the system. This is a well-documented defect in this vehicle population that frequently results in a sudden, unexpected loss of propulsion power while driving ("Propulsion Power Reduced" mode), posing a significant safety risk in high-speed traffic. ?Although a Chevrolet dealership confirmed the presence of the stored fault code, they refused to perform the repair under the extended warranty (Special Coverage N23243268) because the Check Engine Light was not actively illuminated at the exact time of inspection. The manufacturer requires the vehicle to be operated until the fault recurs, exposing the driver and others to the danger of stalling on highways or at busy intersections. The failed component remains in the vehicle and is available for inspection.

Dealer non-Compliance with Recall N192273600 I am reporting Anderson Chevrolet for failure to identify and perform a mandatory federal emission recall while the vehicle was in their possession for service. Because the dealer neglected their statutory duty to perform the free recall repair, I was forced to spend $584.83 at independent shops to diagnose and fix a defect that is a direct mechanical match to the recall repair. General Motors has denied reimbursement, claiming the independent shops repair is ineligible, despite the fact that the dealer’s original negligence created the need for the independent repair. I did call the General Motors Customer Relations department, was told by Breanna a case would be opened and followed up by Angel. No case number given. Angel called the next day and informed me the reimbursement was denied because services were rendered by an independent shop.

The vehicle losses power on high speed, check engine comes on, low propulsion massage displays. Vehicle does not charge. Issues similar to the investigation DCS6812.

It was the XXX recall for the DTC P0442/check engine light code. The dealership said that the recall had been satisfied in 6/2020 by putting a buffer in to separate the 2 lines but not replacing the part. Now the exact same code DTC P0442/check engine light in the exact spot that occurred for the original recall. The dealership originally quoted $5,093, then after me complaining that it is the same recalled problem they dropped the cots to $2384. I believe that is an agreement that the manufacturer should cover this. Of course I will have to pay to get my car but I would like the manufacturer to reimburse me for it seeing it was a manufacturer default. I spoke to the manufacturer they flat out refused to cover it. I obviously disagree. Would like you to pressure them to change their decision. Thank you, [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

My 2018 Chevrolet Volt frequently fails to recognize when the vehicle is shifted into Park. The dashboard displays “Shift to Park” even though the gear selector is already in Park. When this occurs, the vehicle will not power off, requiring multiple attempts to move the shifter before shutdown is possible. This creates a safety risk because the vehicle may be left powered on unintentionally and may not properly secure itself in Park. In one occasion, the vehicle moved backwards even when shifter was in Park, which created a collision risk. This is a known defect affecting many GM vehicles, including the Chevrolet Volt, and has been widely reported by owners. I am concerned about unintended vehicle movement, battery drain, and driver safety.

The contact owns a 2018 Chevrolet Volt. The contact stated that the battery module became inoperable. While attempting to start the vehicle, the message "Engine Unavailable - Service Soon” was displayed. The contact was unable to use the vehicle. The contact stated that the TPMS warning light was illuminated. The contact associated the failure with Technical Service Bulletin: 18-NA-261. The contact called the local dealer and was referred to the manufacturer for assistance. The vehicle was not diagnosed or repaired. The manufacturer was contacted and confirmed that the VIN was not under recall. The failure mileage was approximately 111,000.

On June 27, 2025, while driving, the vehicle displayed a "Propulsion Power Reduced" warning message and a Check Engine Light illuminated. I immediately experienced a loss of power. I brought the vehicle to an authorized Chevrolet dealer the same day. On July 1, 2025, the dealer diagnosed the failure as a faulty Battery Energy Control Module (BECM) and high-voltage system fault (Code P1E00), requiring a full replacement of the high-voltage battery pack (Part #24296900). The manufacturer (GM) was contacted, and the replacement battery was ordered on July 2, 2025. As of December 2025, the vehicle remains in dealer possession (over 5 months) with no repair completed. The manufacturer has stated the part is on indefinite backorder with no ETA. The failure of this component renders the vehicle inoperable and presents a safety risk due to sudden loss of propulsion power while in motion. The manufacturer has confirmed the failure but is unable to provide a remedy within a reasonable timeframe.

The contact owns a 2018 Chevrolet Volt. The contact stated that while attempting to start the vehicle, the engine failed to turn over as intended. Additionally, the vehicle would not charge when connected to a charger. The check engine warning light illuminated. The vehicle was taken to a local dealer, where the BECM was reset. The vehicle was repaired; however, the check engine warning light remained illuminated. In addition, the contact stated that the message "Reduced Power" was displayed on the instrument panel. The vehicle was taken back to the same local dealer where it was diagnosed, and determined that the BECM needed to be replaced. The vehicle was not repaired due to the cost. The contact related the failure to an unknown Chevrolet recall; however, the VIN was not included. The manufacturer was made aware of the failure. The failure mileage was approximately 129,000.

Why in operation the car goes into Shift to Park and Also getting a Propulsion Power Reduce