2025 Chevrolet Tahoe

On May 19, 2026, my 2025 Chevrolet Tahoe suffered a sudden, catastrophic engine failure while traveling at 60 mph on a public roadway. I originally took retail delivery of this vehicle brand new on October 29, 2025, with only 14 miles on the odometer; at the time of the failure, the vehicle had only accumulated 10,049 total miles. The failure resulted in an immediate, complete loss of motive power at highway speeds, creating a severe, life-threatening safety hazard to myself, my passenger, and surrounding traffic. The vehicle was towed to an authorized GM dealership for emergency service. Upon removing the oil pan, dealership technicians discovered a high volume of metal debris and fragments, indicating a severe internal mechanical failure (likely failed engine bearings). General Motors corporate subsequently mandated secondary diagnostic teardowns. Following these tests, GM confirmed a total, non-repairable engine failure requiring a complete engine assembly replacement. This vehicle has remained entirely out of service and non-operational since the date of the incident. On June 24, 2026, with the vehicle out of service for 36 consecutive days, I issued a formal demand letter to General Motors Customer Relations, demanding that they adhere to New York State Lemon Law statutory requirements and initiate an immediate vehicle buyback. Due to this severe defect, this vehicle is now deemed entirely unsafe and unreliable for my family, as our confidence in its mechanical integrity is permanently destroyed. Furthermore, a vehicle requiring a complete engine replacement at this mileage has suffered severe diminished financial value. A catastrophic engine failure on a low-mileage, current-generation vehicle poses an immediate, critical manufacturing defect and an unacceptable risk of high-speed collisions.

On June 12, 2026, while operating my 2025 Chevrolet Tahoe, I experienced an apparent powertrain or transmission-related issue. At the time, the vehicle was already exhibiting another defect involving the air conditioning system, with the driver's side blowing hot air and the passenger side blowing cold air. While attempting to accelerate and pass another vehicle, the engine RPM suddenly increased to approximately 6,000 RPM. The RPM remained elevated momentarily before gradually decreasing. The vehicle's response was abnormal and inconsistent with normal acceleration. Because I was close to home, I continued driving but remained concerned about the vehicle's operation. Since that incident, the same condition has occurred approximately two to three additional times. The problem is intermittent and does not occur every time I accelerate, making it difficult to predict when it will happen. This condition creates a safety concern because sudden, unexpected increases in engine RPM while attempting to accelerate can affect vehicle performance and driver confidence, particularly when passing other vehicles or merging into traffic. The vehicle is being returned to the dealership for evaluation, and the defect remains unresolved.

***SAFETY/DANGER*** On April 12th at around 5:30 p.m. my family of five, to include three minor children were returning home from visiting family which live about an hour and a half away and as we're traveling on the freeway at highway speeds, in traffic, our new Tahoe unexpectedly and without warning went into reduced power mode and cut speed down to approximately 35 MPH in active traffic, which out my family and every other car around me in danger and in jeopardy of causing a collision and even worse, a multiple car pile-up as I dodged full speed traffic in front and behind me while traveling at approximately half their speed. I managed to exit the freeway and heard a loud knocking noise from the engine and saw the reduced power mode indicator, all of which had not happened before but again, the Tahoe is relatively new and was just over 5 months and at 8,889 miles at failure. I proceeded to contact GM roadside assistance. They sent a tow truck and I had to make arrangements for my family to return home, an hour away. I made it to the dealership with the tow truck driver after 9 p.m. ***CATASTROPHIC DAMAGE**" After the dealership inspected close to a week later they did determine that the entire engine and turbocharger had to be replaced, which they did in a little over a month, the dealership did their part but confidence is lost. Now I am hesitant to drive the Tahoe as it's the family vehicle but really put my kids, wife, myself and everyone around us on the road in danger as it, out of nowhere, cut speed drastically in active highway traffic.

I was leaving my neighborhood on Saturday night 5/16 around 5:30 and on the way out all of a sudden the dashboard started lighting up and the speed was dropping despite me being on the gas. The screens kept flashing then the car stopped and went into park and I could not get it out of park. I was at the front of my nieghborhood entrance and it made it hard for others to come in and out. I tried to restart it. My husband tried to jump it. I tow truck came about two hours later only to realize it could not tow it since the vehicle was stuck in park and could not be powered to move it to neutral. They had to call a new tow truck. I was sitting in my car stuck in the entrance of my neighborhood impeding traffic for close to 4.5 hours. A new tow truck finally arrived at close to 9:45pm. It was towed on dollies to the dealership. They inspected it today and said the starter and the engine had both failed/blown and needed full replacement. I am waiting to hear back from them on the estimated time for replacement biut could take weeks which is devastating. My vehicle is the 2025 Chevy Tahoe High Country with the 6.2 L V8 engine that I now understand has issues prior to 2025 and was recalled but nothing yet for the 2025. My car is only 9 months old and has 12,100 miles on it. I am devastated. Prior to this I had no issues and there were no sounds or issues it just happened. It was dark by the end and I was sitting in the middle of the road and the lighting in the area is limited so I had to have someone bring me lamps so other drivers could see me as the car is black and it was very dark. Someone almost hit me pulling into the neighborhood as a result thankfully I was able to get lamps.

I am filing a safety complaint regarding my 2025 Chevrolet Tahoe Premier for repeated brake assist/braking failures. Most recent incident: While driving, the check engine light came on. I turned the vehicle off for approximately 10 minutes and restarted it, but the check engine light remained on. Approximately 20 minutes later, multiple warnings appeared on the dash including: “Brake Assist Failure Press Hard to Brake,” “Speed Limited,” and “Service ESC.” At that point, braking ability was severely reduced. I was close to my destination and approached a stop sign. I intended to roll through the stop sign because the brakes were not functioning normally, but another vehicle suddenly approached. I pressed the brake pedal with both feet. The brakes were stiff and hard to press. The vehicle still did not stop properly and came to a stop in the middle of the road past the stop sign. After arriving at my destination, the vehicle sat for approximately 1–2 hours. When restarted, the brakes appeared normal again, but the check engine light remained on. In the MyChevrolet diagnostics app, it then showed warnings for Engine and Transmission System, Transmission System, and Four Wheel Drive System. While driving to the dealership afterward, the vehicle also began shaking. This same issue previously occurred on April 16, 2026. I was driving on the interstate when the brakes lost assist and the dash displayed “Service ESC,” “Brake Assist Failure Press Hard to Brake,” and “Speed Limited.” After reaching my destination, I was told by someone at the dealership to turn the vehicle off for 10 minutes to see if that would fix things, so I turned the vehicle off for about 10 minutes. When restarted, all warning lights were gone and braking returned to normal. I still drove the vehicle to the dealership that same day for service. This is a repeated, intermittent brake failure / brake assist failure creating a serious safety hazard and near collision risk.

I backed out of my driveway put it in drive stepped on the gas and the car hesitated and just shut down. Steering wheel locked up I had no time to even stair it out of the road. Try to start it and would not start but the dash and radio would come on. Tried to get in neutral to get it out of the road but everything is electronic so we could not do it. We had to have the car towed to the closet dealership. It took them two weeks to even diagnose the problem working along side GM service. Two weeks could have been saved with GM knowing they had a bulleting and problem with the LZO 3.0 Duramax diesel motors. It is not week 5 I still do not have a car and they have not even started putting the new motor in. GM has not been helpful AT ALL! It has been a miserable 5 weeks. They told me I could rent a car myself with a cap of $44 per day with all taxes and fees included and I MAY be reimbursed. So I have to put the money out of my pocket first and they may reimburse me. At this point I would be already out $1540.00 which is not in my budget. I purchased a brank new 2025 Chevy Tahoe 3.0 Duramax diesel motor car and it only has 8k miles on it and the motor is blown. I also paid for the car in full. I have asked GM numerous times to tell me where I went wrong and they have no answers as usual. It has been a horrible experience to this point and I have no idea when it is going to end. The dealership is trying to tell me that my car would not have dies going at higher speeds. I am so luck it happened in my neighborhood and not while on the highway. I could have been killed!

I was driving when I noticed my vehicle lagging and possibly misfiring, and then the "Service Four-Wheel-Drive" warning appeared. I was just down the road from my house, so I pulled into the driveway and put the car in park, but it wouldn’t turn off. I realized the parking brake was engaged and wouldn’t release either. I was stuck in two-wheel drive and couldn’t switch to four-wheel drive, and the emergency brake wouldn't disengage when I pressed the button, so the vehicle still wouldn't shut off. I had to put it in reverse physically step on the gas, which Is the only way The parking brake finally disengaged And allowed the vehicle to shut off.

While I was driving, my vehicle suddenly lost all power I encountered a misfire with the engine light flashing, and diagnostic codes P0353 and P0300 indicated a misfire on cylinder three. The coil pack and spark plugs for that cylinder were replaced, yet issues persist and problems continue. There is a strange popping and cracking noise coming from my dash. My brakes are also making it loud sound randomly when pressing on breaks yet brake pads are fine