CHEVROLET Complaints

Subject vehicle has 11919 miles. The vehicle is less than three years old and covered under factory warranty. While driving 35MPH, engine suddenly did not respond to throttle. This engine stopped. Driver was able to coast to roadside. After OnStar analysis, engine control computer logged code 'P129F - An issue has been detected in the Fuel Management System used to maintain, control and monitor fuel consumption'. After towing to dealer, part number 13554821 was replaced. There were no prior warnings. The engine just stopped and would not restart. This is a major safety concern. This incident occurred 10 minutes after exiting the highway (65MPH). Having your engine stop unannounced at any speed in traffic is not safe, especially in high traffic and high speed situations. Dealer service nevertheless indicated this particular problem and part is well known but not considered a safety issue by the manufacturer. We disagree.

Transmission faulty, loud, clunky and hard shifting! Service transmission now alert and code P0747

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

We purchased a 2023 Chevy Suburban in January of 2026. In May the vehicle shut off on me at a stop light. The check engine light flashed after I was able to restart it. I took it to the dealer and they said they "couldn't recreate the issue" even though there was an engine misfire code on all cylinders. They told me to come pick it up and bring it back if I had further issues. The second time this happened I had issues getting the vehicle started. This was June 2026 Once I finally got it started and was driving all the service lights started going off and the check engine light started flashing. I took it to a different chevy dealer and was told the same thing. This time I had 23 different service codes that showed up. Including the engine misfire code. So we picked it up and continued to drive it. On July 10th we were towing a 7k lb camper home when we lost all power. Thankfully we weren't driving fast and we're able to stop. This left us stranded at a busy intersection for 2 hours. The car would not go out of neutral. Had we been going 70 on an interstate we could have very seriously been hurt. The car had to be towed back to the dealership where we were told the engine locked up and needed to be replaced. My husband and I had our [XXX] child in the backseat with us. This was a family car that we purchased and told twice that they couldn't find anything wrong with it. The vehicle has been at the dealership waiting on a motor since July 11th. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

At approximately 3,000 miles, the engine began making a loud knocking noise that became progressively worse while driving. The truck was diagnosed as needing a complete engine replacement. No warning lights, no check engine light, nothing. For someone inexperienced with vehicles, you could easily be in big trouble on the highway and a potentially life threatening situation. My primary concern is that there was no warning that such a major engine failure was about to occur. An engine that fails with so few miles raises concerns about the possibility of sudden loss of power, loss of acceleration, or engine seizure while driving in traffic, on highways, or while towing. A failure under those conditions could significantly increase the risk of a crash. The vehicle has been out of service while I continue making loan and insurance payments on a brand-new truck that I cannot use. The replacement engine is on national backorder, leaving me without a clear repair timeline. After researching this issue, I found numerous reports from other owners describing similar failures involving the 6.2L V8 engine. Based on the volume of owner complaints, there appears to have been a significant increase in reported engine failures involving 2026 model-year vehicles. This suggests the problem may not be an isolated incident but instead could indicate a broader defect that deserves investigation. As a result of this experience, I no longer feel confident or safe driving this vehicle, even if the engine is replaced. I purchased a brand-new truck expecting long-term reliability and peace of mind, but instead I experienced catastrophic engine failure at only 3,000 miles. I respectfully request that NHTSA investigate these engine failures to determine whether a safety-related defect exists and whether further action is necessary to protect consumers. I have requested a buyback, but GM completely denies it. Such a horrible Expy with manufacture.

On XXX I leased this 2026 Silverado and I have discovered that this truck tramlines, basically rocks side to side on roads with longitudinal grooves in the concrete, meaning lines that go the same way you're driving, the truck will violently swag side to side. I have been pushed into oncoming traffic from this. On 7/17.26 I took my truck to Fox Chevrolet of [XXX] to get service about this issue. I took the general manager of theirs, Marc and he confirmed the issue. He said he would send the DOT number to GM and wait for their reply. He called me on 7/20 saying that GM informed him that this has been reported by others and there's nothing GM is willing to do and to just deal with it. I told him that I find that unacceptable and it needs to be looked at my someone higher up. He passed this to his service manager since he's going on vacation for the next week, Ron. Ron called me and said that he talked to the local dealer rep and that he claims there's a law that says GM can't change tires that didn't come on the truck and that this is a known issue with these tires and again to just deal with it. This is completely unacceptable and flat out dangerous! I had a 2024 Silverado before this truck and it never did it. It had different tires than this truck and that's my argument is the tires are the problem. The manufacturer, Michelin even said that the solution is to get different tires and it's known on these ones. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The car showed an error message saying shift to park when trying to turn the car off. The car was in park and showed in park on the dashboard & shifter but the error message still said it wasn’t in park. While this error is showing it will not allow the car to shut off or lock doors. I have a little over 19k miles on this car and should not have this issue. After researching this has been a know issue with their vehicles for years and it still has not been addressed.

The contact owns a 2027 Chevrolet Bolt EV. The contact stated that while driving approximately 65 MPH with the Adaptive Cruise Control activated, the braking system suddenly activated causing the vehicle to abruptly decelerate when another vehicle passed by. The contact stated that the failure had occurred on two separate occasions while being overtaken by another vehicle on the passenger’s and driver’s sides. The vehicle was taken to the local dealer to be inspected; however, no cause for the failure was found. The manufacturer was notified of the failure. The failure mileage was 900.

Traveling far from home, car suddenly made a rattling noise and engine shut down. Pulled over for a tow. After 2 weeks in a shop, it was determined the fuel pump was defective causing the camshaft to break. Our VIN is not under the recall but the damage was massive. GM refused to admit to pump failure / camshaft defect. Took parts to be inspected also to the dealership and they confirmed. There were no warnings. We were on a major highway traveling at 70 mph when this happened, yes this was a dangerous situation to be in. GM refused to listen to my case that I filed as I stated we have the "right to repair" and took it to the nearest shop. They closed my case with no opportunity to move forward in the customer service world. We had to pay 4900.00 for repair, 214.00 to tow, 1700.00 for a rental car and all they offered were 1000 GM point that converted to 10.00.

The contact owns a 2010 Chevrolet Malibu. The contact stated that while driving 30 MPH, the steering wheel was shaking and locked up, and the steering wheel became difficult to turn. The vehicle lost power steering functionality. The power steering warning light was illuminated. A dealer or an independent mechanic was not contacted. The vehicle was not taken to an independent mechanic or dealer to be diagnosed. The manufacturer was notified of the failure, and the contact was informed that the warranty on the vehicle had expired. The approximate failure mileage was 146,000.