2023 Chevrolet Tahoe problems

“The car had the recall done for the engine issues 1 year ago. Pico test past and oil was changed to new oil. All service is handled by Chevrolet dealer. Now the issue. After leaving home and driving on a highway for about 25 minutes I received lights on the dashboard indicating. Several issues. Flashing engine light, ecm issue amoung some others. I then noticed what sounded like a missfire of the engine. Since I was on my way out of town I decided to turn around and take directly to dealer. I dropped the car off. When I finally turned the car off at the dealer lot and restarted it I also noticed metal clanging coming from engine. The next day I was texted by the dealer that I would be getting a new engine. Car has 78,644 miles.”

“While traveling on I-684 at highway speed, my 2023 Chevrolet Tahoe with 43,000 miles suddenly shut off without warning and automatically shifted into neutral. I had a complete loss of propulsion. As a car guy who has been following the GM 6.2L engine recall issue, I suspected it could be that. I was traveling in the left lane and had to carefully coast across active lanes of traffic to reach the shoulder. My wife and two young children were in the vehicle, and the sudden loss of propulsion created a significant risk of collision. There were no warning illuminations, messages, or other symptoms that I observed prior to the failure. The vehicle was subsequently towed to my Chevrolet dealer for diagnosis and is available for inspection upon request. As confirmed by the dealer, the engine completely seized causing the loss of propulsion. I will also share, about 1 year ago after the GM recall was issued, I took my truck back to the dealer. They cleared the engine for the propulsion issue, changed the oil for 0W40 and changed the oil fill cap in line with GM recall standards.”

“Description of the safety problem On XXX, shortly after starting the vehicle and beginning to drive, I attempted to apply the brakes and discovered that they had essentially frozen up and were not functioning properly. At the same time the vehicle displayed the following warnings: Service ESC, ABS warning light, brake system warning light, "Trailer Brakes Disabled – Service Required," traction/stability control warning, and check engine light. I shut the vehicle off and restarted it. After the restart the brakes appeared to function normally again and most warning indicators disappeared. However, the check engine light remains illuminated, and I have noticed a slight hesitation when starting the vehicle. I have photographs of the warnings taken at approximately 21,029 miles. Relevant history This vehicle was purchased new. The original 6.2L engine suffered a catastrophic failure at approximately 18,685 miles while traveling at highway speed and was replaced under warranty. None of the current problems existed before that engine replacement. Since the replacement, the vehicle has experienced multiple electrical failures, including windshield wipers becoming…”

“Since 15,394 miles vehicle has experience multiple system failures upon vehicle startup. 2/24, 2/25, 12/25, 1/26. In all of these 4 instances the brakes become spongy/hard, steering wheel locks, and I am not able to control vehicle. Dash lights up; "Brake system failure - 43mph top speed", "Fwd collision system unavailable", "Service traction control", "Service ESC", "Service steering column lock", "Service brake pad monitor". Dealership has replaced, Telematic control module, Electronic brake control module (EBCM), Serial data gateway module, Park assist module and most recently they replaced the battery and cleared the codes to "fix" the same intermittent but recurring condition. In 11/24 Recall N242447990 was performed, reprogramming of Brake system control module and Serial Data Gateway Module, the exact same issue happened before and after the recall.”

“The contact owns a 2023 Chevrolet Tahoe. The contact stated that the vehicle was taken to a dealer, where the NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling) remedy was completed with an oil change and oil cap replacement. Approximately three months later, while the contact's wife was driving approximately 45 MPH, the engine stalled. The driver was able to coast to the side of the road. The vehicle was towed to the dealer, where it was diagnosed that the engine had failed. The engine was replaced. The manufacturer was notified of the failure, and a case was opened. The failure mileage was approximately 22,000.”

“On 4/23/25, the check engine light came on and the vehicle reduced power. It was taken to dealership and a warranty service was performed, L87 Engine loss of propulsion. The vehicle was in service for 90 days. On 7/15/26, vehicle shifted itself into neutral while driving on the highway, with 4 kids in the car. This is a safety issue for our family and all around us, as car loses ability to drive at interstate speeds. It would not go back into drive, needed to pull over and get towed to dealership. Dealership diagnosed it needed a new engine and radiator; it was in service for 60 days. On 10/10/26, vehicle shifted itself into neutral while driving with one kid in car while driving on the highway. Vehicle gave the "conditions not correct for shift" and would not go back into drive. Vehicle was shut off and was stalled on the highway, after a time of it being off, vehicle started back up and the check engine light was on. This is a safety issue for our family and all around us, as car loses ability to drive, once again, at interstate speeds.”