Table 1 shows one common engine and engine cooling related problems of the 2025 Chevrolet Tahoe.
| Problem Category | Number of Problems |
|---|---|
| Engine And Engine Cooling problems |
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.
Vehicle power loss, some shaking with no warning lights on dashboard. Dealer confirmed it was engine failure.
***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 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 driving on the highway, the vehicle suddenly downshifted and shut down and would not restart. All lights appeared on the cluster and showed "conditions not correct for shift". Had to have vehicle towed from the side of the road and wasn't even able to shift into neutral.
*total engine destruction from thrust bearing failure (gm bulletin 25-na-307) * yes, failure has been confirmed at chevy dealership (davis Chevrolet gainesville FL) * yes, problem has been reproduced at dealership *only the dealer service department has confirmed failure warning lights, thrust bearing failed sending shrapnel into the bell housing torque converter just loud metal clanging noise from bellhousing area knows of the problem but will not recall just handling them at dealerships as they fail this happened in an isolated area it would have left us stranded in the middle of no where * I am awaiting the service order from the dealer in pdf form and can send upon request! for now I have a 4 month old $90,000 Tahoe in the shop waiting on an engine!.
Dealer grounded vehicle for excessive crankshaft play due to thrust bearing failure. Been without vehicle since 1-20-2026 and although I have received 2 text from service manager I have not been told when I will get vehicle back. Mileage was at 4,820. Vehicle build date 7/25.
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.
My 2025 Chevrolet Tahoe z71 3. 0l lzo duramax with approx. 3,380 miles experienced a sudden and complete engine failure while towing my camper on the interstate at night, in the rain, while traveling alone 375 miles from home. The vehicle lost power, displayed warnings, and became inoperable, forcing me onto the shoulder in unsafe conditions. The engine has been diagnosed as requiring full replacement due to a defective crank end play / thrust bearing, under technical service bulletin (TSB) 25-na-307. This is a significant safety concern for a new vehicle and could have caused a crash. Gm has multiple documented issues with this model year, and the car has also experienced unresolved infotainment defects, as outlined in TSB #pit6393f. Requesting NHTSA to investigate a potential safety defect.
I was driving up to a border check point and slowed down at the guard shack. Once cleared I released the brake and tried to accelerate. The vehicle shut down completely. I tried to restart it and the check transmission warning came on. The vehicle would not restart. I was blocking the lane at the border check. After a few minutes I was able to start the vehicle and limp over to the shoulder of the freeway. There was no power and loud knocking and squealing from the engine compartment. Engine light came on and several other warning lights that I don't recall. I was in the desert with 3 dogs in an unsafe area for 7 hours until I could get help. Vehicle was towed to the dealership and is currently under diagnosis but so far code p0016 and metal pieces in the oil.
Complete engine failure.
4/24 the check engine light was flashing and the car went into limp mode and the display noted to pull over for safety. On 4/25 we took the car to the dealer they did some reprogramming. On 4/26 the vehicle keeps loosing power when driving. . Scheduled another appointment on 4/28 to have vehicle looked at.
Bought the 2025 chevy Tahoe, had about 680 miles on it. 400 of which were from the dealership. Had the pleasure of driving it for a week. Check engine light came on and was told that the transmission valve body had gone bad. The issue regarding that particular transmission has existed since 2019. However the part needed is allegedly on back order, and gm has no idea when they will get that part in.
The vehicle is making a loud ticking noise which leads me to suspect this car has similar, if not the same issue as the 21-24 recalled l87 6. 2 engines. I took it in the first time, they couldn’t reproduce the noise but I already have video documented footage over a few days with the sound of knocking/ticking from the motor. After they did an early oil change at the same mileage I brought the vehicle in for diagnosis, the sound completely went away. A few hundred miles later the sound has come back and the engine is knocking at idle. I have another inspection/ appointment this coming week for the vehicle. Additionally, the vehicle makes loud noises from the steering column after it has been turned off. It also seems to wander when driving the vehicle and the steering wheel assists cause the wandering within lane. It is very unsafe to drive this vehicle due to these two issues.