2023 Chevrolet Silverado 1500: check engine light

Filed Nov 5, 2026 · Engine · 74,800 miles · NY

The contact owns a 2023 Chevrolet Silverado 1500. The contact stated that while driving 45 MPH, the check engine warning light illuminated, and there was an abnormal sound coming from the vehicle. The contact stated that the engine seized. The vehicle was towed to the dealer, where it was diagnosed that the screws had backed out of the CAM actuator. The contact was informed that the engine and the turbo needed to be replaced. The vehicle was being repaired. The manufacturer was contacted, and a case was filed. The failure mileage was approximately 74,800.

Filed Sep 24, 2026 · Engine, Transmission · TX

I drive a 2023 Chevrolet Silverado 1500 3.0L Diesel with the 10-speed transmission. The transmission control software failed to monitor/detect valve body wear or trigger a 5th-gear 'limp mode' safety net, resulting in three separate instances of sudden rear-wheel lockup at speed. The dealer was unable to replicate the issue during a service visit from 6/10 - XXX. The issue was raised as the transmission was shifting increasingly badly leading up to this service visit. The first full lockup occurred a few days after receipt of the vehicle on XXX driving eastbound on [XXX]. Off the gas, coasting downhill. Once everybody started speeding up, I increased the throttle gently and the truck shook violently. I initially thought I had been hit by another vehicle but realized it was the transmission. Speed was noted 24 mph. The second incident occurred XXX while traveling to [XXX]. Driving southbound between [XXX] and [XXX] at approximately 50 MPH in a coasting condition. Went to pass a slow vehicle and the vehicle jerked violently an locked the rear wheels. Initial assumption was that I had been hit. Was able to regain control and continue. The third incident occurredXXX while traveling from [XXX] to [XXX]. Driving eastbound on [XXX] at approximately 35 mph, when moving from a coast to acceleration posture, the vehicle again locked the rear wheels and jerked violently. Finally, onXXX when traveling southbound from [XXX] to [XXX], I stopped for fuel. When attempting to accelerate onto the freeway, the vehicle failed to engage 6 gear, stumbled, and then went into limp mode with a check engine light. On XXX a [XXX] dealer found code P0747 and addressed the issue with [XXX]. I was forced to rent a car to continue my journey to [XXX]. GM ultimately shipped my truck back to me one week later. The software 'fix' clearly did not work as intended and remains a serious safety hazard. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 22, 2026 · Fuel system · 58,010 miles · TX

The contact's daughter owns a 2023 Chevrolet Silverado 1500. While the contact's daughter was driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to an independent mechanic where it was diagnosed with a failed evaporative emission purge pump. The contact was advised to take the vehicle to the dealer. The dealer was contacted by phone and made aware of the failure. The vehicle was taken to the dealer where the failure was confirmed. The contact was informed that the repair was covered under an unknown recall. The contact was later informed that the repair was not covered under the unknown recall. The contact referenced an unknown recall; however, the VIN was not associated with a recall. The vehicle was taken back to an independent mechanic and the vehicle was repaired. The manufacturer was contacted by phone and made aware of the failure. The contact was advised to contact the federal safety agency Hotline to report the failure. The failure mileage was approximately 58,010.

Filed Sep 3, 2026 · Engine, Fuel system · NY

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.

Filed Jun 29, 2026 · Transmission · WA

MOMENTARY WHEEL LOCK UP. ENGINE WARNING LIGHT CAME ON. Safety warning not to drive as could cause catastrophic damage to transmission. Same symptoms as noted on update GM bulletin N242454441. 12/24. Only extends warranty 2020- 2022 models up to 150,000 miles. Gen 3 Transmission Control Valve appears to be the fix... My vin not included in the extended mileage. I just turned 62,000. Just out of Standard Warranty.

Filed Jun 25, 2026 · Brakes, Engine · 54,000 miles · NY

The contact owns a 2023 Chevrolet Silverado 1500. The contact stated that while driving approximately 50 MPH with his wife and grandchildren inside the vehicle, the check engine warning light, collision warning light, and several other unknown warning lights were illuminated. The contact stated that the message "Braking System Failure - Do not exceed 62 MPH" and the trailer brake message was displayed. The contact continued to drive the vehicle; however, whenever the brake pedal was depressed, the vehicle failed to slow as intended. The vehicle was taken to a dealer where it was diagnosed and determined that a software update was needed. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was 54,000.

Filed Jun 9, 2026 · Acceleration · GA

Check Engine has been triggered by faulty TCM. Vehicle is a 2023. Dealership says they have repaired a few others.

Filed Jun 3, 2026 · Engine, Fuel system · KY

I was travelling on the highway at approximately 72 miles an hour in the left lane trying to pass a vehicle in the right lane. while accelerating my truck was like the brakes were slammed on and all kinds of lights starting flashing. This included the check engine light, low oil pressure light and lane assist lights. The truck shifted into Neutral and I could not place back into drive. I swerved and almost lost control of the vehicle and nearly missed colliding with the safety rails on the left of the road and then with the car on the right side. I then pulled onto the shoulder after nearly being rear ended by another vehicle approaching on the left. The vehicle would not react to the gas pedal. I pulled onto the shoulder and turned the vehicle off. Tried to restart but again nothing but mutliple lights and warnings. I checked my app for Chevrolet and it stated that the vehicle needed engine and transmission system service. Variable valve timing system needs serviced. Ingition system needed serviced. The onstar diagnostic alert indicated P0016 was detected. I opened the hood to inspect and the coolant overflow was spewing coolant. I checked the oil level at that point and it was just a little below full. I had taken this vehicle into the dealership two other times stating that the vehicle had stalled before on the highway but not to this degree. The other two times it stalled when accelerating it would allow me to pull over and restart. But both of those times I never had any flashing lights or diagnostic codes. I explained this to the dealership and how unsafe it was. Both of those times almost ended in a vehicle accident with other vehicles around me. The dealership said they could not diagnose any issues unless the truck created a diagnostic code. These issues have been ongoing with these vehicles for a long time and the dealership just did not want to deal with them. I had the vehicle go thru the recall diagnostic tests. It did not fix them

Filed May 26, 2026 · Engine · OH

What component or system failed or malfunctioned, and is it available for inspection upon request? Engine seized and vehicle was towed to dealership. It is available for inspection. How was your safety or the safety of others put at risk? Loss of propulstion, described below. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes, dealership where originally purchased. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Inspected at dealership by GM/Chevrolet technician. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? None prior to failure Detailed description: On 5/21/2026, during normal driving, the engine in my truck lost propulsion due to a major internal failure. This is a 2023 General Motors 6.2L (L87) engine that was inspected at the dealership where it was originally purchased for the previously issued the federal safety agency "loss of propulsion" recall and passed without any noted issues. This engine only has ~20,000 miles on it. The engine failed in relatively heavy traffic and could have easily resulted in a serious accident due to inability to route my vehicle to a safe area while under power. This all happened without any prior warning, no check engine lights, noises or lamps or symptoms. The dash simply illuminated with a "Press Start" message.The truck was towed to the dealer for evaluation. The dealer called me today (5/26/2026) stating the engine was seized and a new engine would have to be ordered from GM for installation. This event occurred while the vehicle (2023 Silverado ZR2) is still under the original 36 month/36,000 mile warranty.

Filed May 13, 2026 · Engine · TX

What component or system failed or malfunctioned, and is it available for inspection upon request? ENGINE How was your safety or the safety of others put at risk? The truck exhibited an abnormal, rough idle, severe shuddering, poor acceleration, unable to maintain speed on highway and in traffic Has the problem been reproduced or confirmed by a dealer or independent service center? Yes Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? No, only the dealer Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Yes, check engine light appeared and was cleared by dealer, then reappeared a week later

Filed May 5, 2026 · Electrical, Fuel system · 373,200 miles · TX

The contact owns a 2023 Chevrolet Silverado. The contact stated while driving at approximately 40 MPH, the vehicle stalled, the brakes were inoperative, the gear shift was stuck in drive, and all of the doors and windows were locked and inoperative. The check engine warning light was illuminated and the "please restart the engine" message was displayed on the instrument panel. The vehicle was taken to a dealer where it was diagnosed that the fuel pump regulator module needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was approximately 373200.

Filed Apr 13, 2026 · Transmission · FL

One day the trucks transmission started to struggle to find the next gear after taking off from a light. The next morning it did it again and that night did it a third time. The third time it about brought the truck to a stop at 30 mph and made a bang noise, in which a check engine light came on and a message saying speed limited and drive with caution. The truck only has 20,000 miles and already is having transmission issues, which is just unacceptable.