CHEVROLET Complaints

Driving along the highway the CEL light came on followed by reduced engine power warning. Vehicle abruptly slowed down to 35mph (limp mode). Were there to be another vehicle behind me, they would have to do emergency braking. My vehicle would not start after pulling over to the shoulder. A tow truck was dispatched, and after diagnosis from the service center; The fuel pump module was found to be defective.

Original Owner of 2021 Chevy Trailblazer LT. Purchased new in April 2021. Vehicle has a history of major powertrain issues, starting with Check Engine light during its first year of ownership, culminating in a complete turbocharger replacement in December 2025. This only as a result of my research, after many visits to dealership trying to diagnose the issue. The check engine was consistently illuminated in the vehicle 2021-2025. 9 days ago while traveling the vehicle, experienced sudden oil pressure loss, and stalling risks, displayed a hard warning “ENGINE OIL PRESSURE LOW. STOP ENGINE”. On Star provided me with a diagnostic code of P0521, pointing to an engine oil pressure sensor malfunction. Apparently another widely known issue with this engine, there are TSBs stating after repair the code will return and Software Update required. Extended warranty has expired, dealership as well as GM corporate unwilling to provide any assistance with cost of diag, repairs, etc, leaving myself and disabled dependent stranded. Vehicle since purchase has been exclusively serviced through the purchasing dealerships service center. Maintenance regularly maintained. Service management has admitted knowledge of this issue with this engine, still reluctant to provide any additional assistance, informed me I’m on a waitlist for a possible loaner vehicle 4-6 weeks from now. There are several TSBs on this engine surrounding this issue. Apparently there is a known defect with the engine oil pump, cam shaft, evap purge pump. Strong possibility could be a result of the Turbo replacement, debris from that failing turbo could have blocked the oil system, causing starvation.

Vehicle brought to Chevrolet dealer for recall# N252494000 at 27,626 miles. Vehicle passed inspection and oil replaced per recall. Despite engine passing and recall complete the engine failed at 29,861 miles requiring an engine replacement which was provided under warranty. The failed engine was taken by GM.

Catastrophic Engine failure - Chevy, Silverado 1500, Yr: 2023; Odometer: 33,183: On 8/16/2026 we were traveling down a busy highway towing our camper and the engine completely stopped, no propulsion, no warning lights, no check engine lights; complete failure; we had to coast to side of road. The only thing that indicated a problem is that we started hearing what sounded like marbles rattling, it wasn't loud but noticeable. We pulled over at gas station to check oil, even though we just had the oil changed for maintenance on 7/17/2026 (Odometer: 32,587). Everything checked out ok; however, the marble sound became louder; then within 5 minutes of leaving the gas station, we lost all engine propulsion; the engine completely shut down. Our safety was put at risk as we had no truck engine and were towing a camper on a busy highway; and had to try and coast to a safe location on side of road; miles away from home. We had to call a tow truck to come get us and unfortunately, they could not help us with our camper so then had to call our son to come with his truck to get our camper and us home safely. The tow company also had a difficult time getting the truck into neutral to tow. The truck was towed to our hometown Chevy Dealer. The dealer said that they were not going to diagnose the problem and instead are ordering a new 6.2 engine; same as the 6.2 that failed. We asked if this would fix the problem and they said there were no guarantees as it is the same engine with the same problem. Prior to this event, we received a recall in Sep 2025 and an engine inspection and oil change was performed on 9/12/2025 (Odometer: 25,751); we were told that our engine was ok. As of 9/3/2026; we have been without our vehicle for 17 days.

Vehicle: 2024 Chevrolet Blazer VIN: [XXX] Component: Engine Cooling System (Radiator) Description of Incident: On XXX the vehicle was brought in for a routine maintenance service at approximately 20,000 miles. During the inspection, technicians at Hamilton Chevrolet in Warren, Michigan discovered a premature radiator leak. The servicing technician noted that this is a common failure on modern Blazers due to a manufacturing material mismatch, specifically where the plastic end tanks meet the aluminum radiator core. This structural component failure poses a severe safety risk. A rapid loss of engine coolant can cause immediate engine overheating, thermal management failure, and a sudden loss of vehicle propulsion while driving at highway speeds, significantly increasing the risk of a crash. Corrective Action: The defect was located and the radiator was subsequently replaced under the factory warranty by Hamilton Chevrolet (Warren, MI). However, this failure occurred far too early in the vehicle's lifecycle, indicating a structural or material defect in the OEM radiator seams. Please investigate this issue, as premature cooling system failures on this model year present an ongoing safety hazard. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Purchased aftermarket headlight assembly via Amazon. Wiring harness overheats during normal use, causing connector damage/melting. This is the third unit with an identical defect within one month — seller/manufacturer has replaced twice but the problem recurs. Poses fire/electrical hazard. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

On September 2, 2026, at approximately 3:19 PM, my 2025 Chevrolet Equinox EV unexpectedly applied hard automatic braking while I was proceeding through a green intersection. A white SUV ahead of me was moving to the left and clearing my travel path. There was no vehicle, pedestrian, bicycle, or other obstacle directly blocking my lane that required emergency braking. At the exact moment the vehicle applied the brakes, a Forward Collision Warning appeared on the driver display. Based on the warning and the braking response, I believe the Forward Collision Alert/Automatic Emergency Braking system falsely detected an imminent collision and activated unnecessarily. The unexpected braking created a risk that a vehicle behind me could rear-end my vehicle. My two children were passengers and were frightened by the sudden braking. No collision or injury occurred. There were no warning lamps, messages, or symptoms before this incident. The Forward Collision Warning appeared only when the unexpected braking occurred. The problem has not yet been reproduced or confirmed by a Chevrolet dealer. The vehicle has not yet been inspected by the dealer, manufacturer, police, or insurance company. I reported the incident to Chevrolet and opened case number 109390168. The vehicle and original dashcam footage are available for inspection upon request. The video shows the traffic conditions immediately before, during, and after the braking event. As a temporary safety precaution pending inspection, I changed the automatic-braking settings to Alert Only while retaining collision warnings.

While driving on the road, the transmission in my truck completly neutralized all the gears (meaning it just started revving and slowing down rapidly in the middle of the road with cars in front of and behind me). And almost got me hit by several cars. I got the vehicle towed to the Chevy dealership it was bought from. The mechanics then confirmed the code was for a failed valve body in the trucks transmission. Which they had recalled in all the diesels but not gas engines.

NHTSA VEHICLE SAFETY COMPLAINT Vehicle: 2022 Chevrolet Silverado K1500 Trail Boss Engine: 6.2L V8 VIN: [XXX] Selling Dealer: Harris Hankins Chevrolet, Bay Springs, Mississippi I purchased this 2022 Chevrolet Silverado K1500 Trail Boss from Harris Hankins Chevrolet in Bay Springs, Mississippi. The truck is equipped with the 6.2L V8 engine and has experienced repeated and serious engine failures. The vehicle is currently operating on its third engine. The original factory-installed engine suffered a major engine failure at approximately 27,000 miles. The vehicle was taken to a Chevrolet dealership, where the original engine was replaced. The second engine failed within approximately 30 miles of leaving the dealership following the first engine replacement. This failure resulted in the vehicle requiring another engine replacement. The truck is now operating with its third engine. I have periodically noticed abnormal valvetrain noise coming from this third engine. Considering that the first two engines experienced major failures, I am very concerned that this abnormal valvetrain noise may indicate another developing engine problem or potential engine failure. This 2022 Chevrolet Silverado has therefore experienced two major engine failures at very low mileage and is now on its third engine, which is periodically exhibiting abnormal valvetrain noise. I believe these repeated engine failures represent a serious vehicle safety concern. A sudden engine failure or loss of propulsion while traveling at highway speeds or in traffic could create a dangerous situation for the driver, passengers, and other motorists. I am requesting that the National Highway Traffic Safety Administration (NHTSA) formally document my vehicle’s history and investigate these repeated failures involving the Chevrolet/GM 6.2L V8 engine. The dealership has the service records and repair documentation concerning the previous engine failures and engine replacements. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FO

I did the 0w-40 oil swap and now my truck is having more issues than before the recall, doing a “oil consumption test”