Chevrolet Camaro check engine light comes on

Filed Sep 3, 2026 · Transmission · IN

The contact owns a 2021 Chevrolet Camaro. The contact stated that while driving at an undisclosed speed, the wheels locked up and the vehicle stopped abruptly. There was no warning light illuminated. The vehicle lost electric power and shut off. The vehicle was restarted. The contact attributed the failure to the internal transmission control valve (TCV). The contact stated that the vehicle was previously repaired under the federal safety agency Campaign Number: 25V148000 (Power Train). The vehicle stalled on several occasions while driving. The contact initially dismissed the intermittent stalling because the vehicle temporarily returned to normal operation. The contact stated that the check engine light occasionally illuminated, and the vehicle was taken to an independent mechanic where it was diagnosed with transmission control module failure. The vehicle restarted independently, and the code was erased. The manufacturer was notified of the failure. The vehicle was not repaired. The contact was informed that the transmission needed to be replaced.

Filed Mar 26, 2026 · Engine, Fuel system · IN

The car powered off on me while driving on the interstate causing an extremely dangerous situation for me and other drivers without any warning, no signs the vehicle abruptly stopped I coasted to the side and avoided traffic and started right up but drove rough. It’s fuel and fluids in the car and no check engine lights were on.

Filed Jan 16, 2026 · Engine, Transmission · 130,000 miles · FL

The contact owns a 2020 Chevrolet Camaro. The contact stated that while driving 65 MPH and depressing the accelerator pedal, the vehicle vibrated, jerked, and made abnormal whining and metallic sounds. The check engine warning light was illuminated. The contact pulled over to the side of the road. The vehicle was towed to a Toyota dealer, where it was diagnosed, and the failure was associated with the federal safety agency Campaign Number: 25V148000 (Power Train). The vehicle was not repaired. The vehicle was then taken to Starling GMC Titusville(1350 S Washington Ave, Titusville, FL 32780), where it was diagnosed. The dealer determined that the engine and the drive belt needed to be replaced. The vehicle was not repaired due to the cost. The manufacturer was notified of the failure and referred the contact to the dealer for assistance. The failure mileage was approximately 130,000.

Filed Dec 18, 2025 · Transmission · LA

The failure involves the powertrain, specifically the 10-speed automatic transmission and its internal Transmission Control Valve (TCV) located within the valve body. The transmission has failed, and a GM dealership determined that the entire transmission requires replacement. The vehicle is currently inoperable, and the transmission is available for inspection upon request. My safety was put at risk due to abnormal transmission behavior. GM issued a recall for this vehicle related to excessive wear of the Transmission Control Valve, which can cause abnormal downshifting and, in some cases, wheel lock-up during downshifts. Sudden or unintended downshifting at speed presents a serious safety risk to the driver and others on the road. The failure has been confirmed by an authorized GM dealership, which diagnosed the transmission failure and stated that a full replacement is required. The vehicle has been inspected by the dealership, and the recall remedy was performed in July 2025. The recall consisted of a software update to monitor excessive TCV wear, not a mechanical repair. Prior to the complete failure, there were repeated warning signs, including check engine warning lights. The vehicle was brought to the dealership multiple times in March and April 2025 for check engine warnings. After the recall software was installed in July 2025, the vehicle was serviced again in September 2025 with no issues noted at that time. The check engine light returned in November 2025, and on November 11, 2025, the transmission failed completely, rendering the vehicle unsafe to drive. Despite proper maintenance and multiple service visits addressing warning indicators, the transmission failed prematurely at approximately 74,000 miles. Given the known recall related to excessive TCV wear and the nature of the failure, this appears to be a defect-related powertrain failure rather than normal wear and tear.

Filed Dec 12, 2025 · Engine, Transmission · 185,100 miles · GA

The contact owns a 2016 Chevrolet Camaro. The contact stated that on the same day that the vehicle was purchased, the vehicle experienced a failure. The contact stated that while attempting to start the vehicle, the vehicle failed to immediately start-up. The dealer, Flori Auto Sales LLC, was contacted, and the dealer towed the vehicle to the dealer, where it was diagnosed with starter failure. The vehicle was repaired. The contact stated that on a separate occasion, the check engine warning light illuminated. The contact took the vehicle to Auto Zone, where it was diagnosed, and determined that the Transmission Fluid Temperature (TFT) Sensor "A" had failed. The vehicle was not repaired. The contact called an independent mechanic and was informed that the dealer needed to repair the vehicle. The vehicle was taken to the dealer. Once the vehicle was at the dealer, an employee used a handheld scanner, and the check engine warning light was no longer illuminated. The dealer informed the contact that the vehicle was repaired, and an emissions test was conducted without the contact's permission. The contact took the vehicle back to the residence. The contact stated that the cooling fan failed to function as intended. No warning lights were illuminated. The vehicle was taken to Auto Zone, and the contact was informed that DTC: P0128 and P0811were retrieved; however, the warning lights were no longer illuminated. The contact took the vehicle to an emissions testing center and was informed that the Transmission Fluid Temperature (TFT) Sensor "A" had failed and had not been repaired. The contact was informed that the vehicle had passed the emission test; however, a failure was present, and the vehicle should not have passed the test. The manufacturer was not made aware of the failure. The failure mileage was 185,100.

Filed Dec 8, 2025 · Transmission · 56,000 miles · FL · crash

The contact owns a 2020 Chevrolet Camaro. The contact stated that while driving at an undisclosed speed, the steering wheel failed to steer in the intended direction. The vehicle twisted and the wheels locked. The vehicle crashed into a concrete curb. The contact stated that the vehicle incurred damage to the front passenger's door, and the front passenger's door panel was detached. The vehicle was towed to the dealer, where the contact was informed that the failure was due to an unrepaired recall. In addition, the contact stated that the vehicle had an electrical system failure, and the check engine warning light was illuminated. The contact stated that the vehicle had been taken to the dealer multiple times; however, the repair was unrepaired. The contact stated initially that there were three unrepaired recalls; however, two were repaired. The contact stated that the recall the federal safety agency Campaign Number: 25V148000 (Power Train) was not performed. The contact was informed that the manufacturer needed to approve the claim. In addition, the contact stated that the vehicle was still at the dealer and had been there for four months. The manufacturer was made aware of the failure, and a case was filed. In addition, the contact was informed that the dealer was to perform the recall repair. The failure mileage was approximately 56,000.

Filed Nov 24, 2025 · Transmission · LA

My 2021 Chevrolet Camaro has experienced repeated transmission-related issues and has now suffered a complete transmission failure at approximately 74,000 miles. GM previously performed the Transmission Control Valve (TCV) recall on my vehicle, but the recall was only a software update to monitor for excessive valve wear. It was not a repair. The recall notice states that excessive TCV wear can affect hydraulic pressure, torque converter lockup, and downshifting behavior, and GM created software to continuously monitor for this excessive wear to prevent a potential wheel-lock condition. Despite this, my transmission has continued to have problems. In March 2025 I brought the vehicle in for a check engine light, and again in April 2025 for additional transmission-related issues. The service history does not clearly state what repairs were performed, only that transmission service was done. We have brought the vehicle in multiple times for check engine lights and for all recall updates.In Nov 2025, the transmission began to fail completely. The dealership has now advised that the entire transmission needs to be replaced. A transmission does not require full replacement unless significant internal wear or component failure has occurred. Excessive internal wear is the exact condition the recall software is designed to monitor for. GM has stated there are “no known failures after the recall,” but my case clearly contradicts that. The recall was primarily aimed at preventing a lock-up safety event, not mechanical deterioration. Excessive TCV wear can still cause progressive internal transmission damage over time, even after the recall software is installed. This failure affects the safe operation of the vehicle, including loss of power, unpredictable shifting, and potential inability to accelerate. GM is refusing to fully cover the repair and is only offering partial goodwill coverage despite the failure of the excessive wear condition identified in the recall.

Filed Nov 21, 2025 · Electrical, Steering · 59,000 miles · CA

The contact owns a 2016 Chevrolet Camaro. The contact stated that while driving over the train tracks at an undisclosed speed, the contact noticed that there was smoke and a burning odor coming through the vents. The check engine warning light was illuminated. The contact pulled over to the side of the road. The contact opened the hood and inspected the engine compartment, but the contact could not find the origin of the burning odor. The vehicle was towed to the residence, where the contact discovered that the smoke and the burning odor were coming from the starter that was 3 inches away from the exhaust manifold, by design. The contact purchased the starter from the dealer, and the contact replaced the starter; however, the failure persisted. The contact then noticed that the wires and the wiring harness of the starter were severely burned. The contact purchased the wires and the wiring harness from the dealer. The contact replaced the starter, the wires, and the wiring harness, and installed a custom-made heat shield between the starter and the exhaust manifold. Additionally, the contact stated that the steering wheel had failed to lock after turning off the vehicle. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 59,000. The VIN was not available.

Filed Oct 10, 2025 · Acceleration · TX

The contact owns a 2020 Chevrolet Camaro. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated, prompting the contact to pull over to the shoulder of the roadway and shift into park. Upon shifting back into drive, the vehicle suddenly accelerated independently. The contact was able to regain control of the vehicle before a crash could occur. The vehicle was taken to an independent mechanic, who was unable to determine the cause of the failure. The vehicle was not repaired. The manufacturer was notified of the failure, a case was opened, and the vehicle was inspected. The failure mileage was unknown.

Filed Sep 10, 2025 · Engine · 23,000 miles · MI

The contact owns a 2019 Chevrolet Camaro. The contact stated that while driving at an undisclosed speed, there was a loud knocking sound coming from the engine compartment, the check engine warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed and determined that the exhaust system had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 23,000.