Traveling down the highway at 65 MPH the engine/transmission started bucking and you could hear the rear wheel lock up. The vehicle then would not shift and reduced the speed to 55MPH. Check engine light came on. Chevrolet is telling me the valve body needs to be replaced but keep driving it because it is on national backorder. After doing some research GM is hiding the issue and keeps installing faulty valve bodies. The GM fix is that they programmed the transmission to reduce speed when it notices excessive wear. GM is not standing behind the issue as it has been like pulling teeth to get a loaner vehicle.

- Assonet, MA, USA

Vehicle broke down on 12/1/2024. Had it towed to the nearest dealership. Dealership claimed that gasoline was pumped into the tank. We knew that wasn't the case. I called the store we last used for fuel and spoke to the manager. She was able to pull my wife up on surveillance and verified that she pumped diesel fuel from a "diesel fuel only" pump on 11/21/24. We also verified that the fuel in the holding tank at the store was actual diesel fuel. My wife purchased $23.45 gallons of diesel fuel. The tank size on this Tahoe is a 24 gallon tank. We had burned half of this fuel before the vehicle broke down. We also verified that no one else had complained about the fuel from the store. Dealership said it needed a new engine. We had it towed to another dealership for a second opinion, but they couldn't verify what happened because the 1st dealership had cleaned out the fuel system. I called GM but they won't help because they are going off what the 1st dealership claimed. Vehicle is still under power train warranty, but they won't fix it. This vehicle left us stranded on the side of the road. Insurance was called and a representative did go and look at the Tahoe. He called back and said that the issue does not fall within our policy.

- Scottsburg, VA, USA

First the front collision warning systems kept coming on and off. Then the engine died on the highway and I had to restart. I drove a little further and it died again and would not restart. I had it towed to the dealer and they are telling me the engine has seized and needs to be replaced. I have 40,000 mile and the car is 2 years old. It was very dangerous to have the car die twice while at speed on the highway.

- Willowbrook, IL, USA

Repeated issues with the infotainment system had to be replaced 3 times to date. The motor blew at 49,000 miles 3 weeks ago. The replacement motor is on back order and it is very difficult to get a loaner vehicle, not to mention having to make a payment on the vehicle that I don-??t have to use.

- Fort Myers, FL, USA

Traveling in left lane of [XXX]. Vehicle screen went black and car lost all power. No warning lights. Vehicle towed and inpected by GM dealership and determined that the vehicle needed a new engine. Vehicle maintenance records confirmed proper maintenance was done. Vehicle only 13 months old. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Naples, FL, USA

I was driving my 2023 Tahoe on the interstate, in the far left lane. I had my wife and 2 kids in the car. Suddenly I noticed the air turned off and the dashboard screen went blank. I noticed that the car was now in neutral and the accelerator was not providing any response. I put on my hazards and started to merge across 7 lanes of highway without using brakes because we were going up a hill. We lost momentum in the second to last lane and could not move. The Tahoe then switched to park and the electrical system kept shutting off and rebooting. This also resulted in the hazard lights turning off for brief moments in time, so it was not effectively alerting other travelers of our dysfunction. (This repeated for the next 30 minutes until the battery died.) During that 30 minutes we were stuck in the lane with traffic buzzing around both sides of us honking and people screaming at us. My wife and 2 young children were upset and crying from the commotion. Poluce and emergency response team arrived, flagged traffic and drug the vehicle off the road.car was stuck in Park, with no ability to move to neutral. So tire rubber was smeared across the last 2 lanes and into the right shoulder. Later a tow truck arrived and hauled to dealership. The car had ~11,000 miles and bought the vehicle 2 months ago. This should not happen with new cars.

- Marietta, GA, USA

When we first purchased our 2023 Tahoe the engine was making a tiking noise we took it back and they told us it was because it was brand new time past engine always needs oil when we drive it u have to press gas pedal it also has electrical problems back camera turns on and off. Brake sensors don-??t work. I almost had a bad car accident due to the engine that it had stop because it said reduced power while I was on a highway. I lost my son 3 yrs ago in a car wreck. I don-??t want no more accidents so please help me figure some out with my Tahoe. I also went to dealership and they directed me to a manager. Manager never help never called back or nothing we bought truck at friendly Chevrolet

- Duncanville , TX, USA

Engine, (6.2 liter V8), quit without warning at highway speed, nearly causing head-on collision. Engine wouldn't re-start and needed to be towed to dealership on flatbed truck. Vehicle also wouldn't shift into neutral requiring it to be dragged onto flatbed. Chevy dealer states new engines are on backorder with no expected repair date.

- Flagstaff, AZ, USA

While slowing for a red light my vehicle shut off, completely powered off. I had to press the ignition start button to turn it back on. I pulled to the side of the road, then two messages flashed on the dash screen, Service Transmission and Service Brake Assist. I called and scheduled a vehicle service at a local Chevrolet service center. After the service center evaluated my vehicle (in their possession for 72 hours) they stated there were no diagnostic findings and they could not replicate the issue. A vehicle randomly shutting off with no identifiable or repairable issue is a public safety concern.

- Zachary, LA, USA

I was driving in the fast lane and all of a sudden my car went into neutral. Thankfully, my children were not in the car and I was able to merge over safely to the side of the freeway. after as I barely pulled off the car completely shut off. I tried to turn back on several times but would not start back up. I had my Tahoe towed to the dealership, and they told me the engine seized up and was a failed engine. Dealership ended up ordering another engine and it was missing some sort of plug that failed and had to replace again!

- Yorba Linda, CA, USA

The contact owns a 2023 Chevrolet Tahoe. The contact stated that while driving 70 MPH, the vehicle lost motive power and stalled without warning. The contact was able to coast over to the side of the road. No warning lights were illuminated prior to the failure; however, the check engine warning light illuminated after the failure and remained illuminated. The contact attempted to restart the vehicle; however, the vehicle failed to restart. The vehicle was towed to the dealer where it was diagnosed with engine failure. The vehicle was not repaired and remained with the dealer. The manufacturer was not notified of the failure. The failure mileage was approximately 49,566.

- Oklahoma City, OK, USA

The contact owns a 2023 Chevrolet Tahoe. The contact stated while driving 70 MPH, the vehicle lost motive power. The contact attempted to restart the vehicle; however, the vehicle failed to start. Additionally, the contact stated that the failure had occurred on a busy highway. The vehicle was towed to the dealer where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 28,000.

- Naples, FL, USA

Our engine (v8 6.2 liter) failed with out warning while my wife was driving. She said that while driving all of a sudden the dash started flashing telling her to restart the engine. The car just started shutting down. She had to immediately pull off into the median and barely made it out of the fast lane when the car stopped. She was so close to the fast lane that there wasn-??t enough room for a person to stand without being hit. We had our Tahoe towed to the closest dealer thinking maybe it was an alternator. The dealer confirmed it was a failed engine and that our vehicle is the third vehicle on their lot with the same failed engine. All of the failed engine vehicles have right at 40 k miles plus or minus 1k miles. The only problem that we had noticed before the failure, happened that morning when I took the Tahoe to fuel up for my wife prior to her leaving. I noticed the engine cranked slow for a second before it started. I thought maybe the battery is just getting weak and that as she drove it that day, it would charge the battery. The exact failure as I understand it from the technician is -?? the 5th cylinder failed in the lower half of the engine.-?? Apparently this is failing because the bearings weren-??t properly seated during manufacturing.

- Saint Helena Island, SC, USA

On Sunday January 12, I was driving the vehicle on the highway with my cruise control on. The engine started missing the speed dropped a bit as the cruise control would not hold the speed. A mile or so later the vehicle engine started knocking with a metallic sound. I pulled over at the next exit and stopped at a store to look at the engine. There was nothing loose and a deep metallic knocking coming from the engine block, so I shut off the vehicle and called OnStar. At no time did any warning lights or other indicators come on. The gauges were normal. They/OnStar indicated I should not drive the vehicle, and they will tow to nearest Chevy Dealer for service and give me a $50 credit to take a Lyft to local airport to get a rental car. I was almost 4 hours away from home as I was travelling. After a week of turmoil with the local dealership I was told the vehicle needs a new engine. There is no ETA on the new engine as GM has to build it and has parts shortages. This was 5 weeks ago. I have been driving a rental since and there is still no indicate from the dealership about what happened or why. The vehicle is a 2023 and still under warranty but I am having to pay for the rental and request reimbursement which hasn't happened to date. There is very little information available, and I am in no man's land without a vehicle, so I have an open ended rental situation.

- Chelsea, MI, USA

The vehicle shut off on the expressway causing a very dangerous situation. After several attempts it would not start again. I had to have the vehicle towed to the dealer and they advised me the engine has seized up. Most likely they told me the engine blew and will need replacing.

- Bloomfield Hills, MI, USA

While driving the vehicle, the transmission stopped shifting and the engine shut off. There was no warning.

- Carmichael, CA, USA

Fuel module failure. Tahoe stalled while on highway at normal speed of 55 mph. Near miss accident. Very dangerous, could have resulted in injury or fatality. Tahoe had to be towed to Chevy dealer, caused major problems. Tahoe only had 24,000 miles at time of incident.

- Houston, TX, USA

The contact owned a 2023 Chevrolet Tahoe. The contact received notification of NHTSA Campaign Number: 24V674000 (SERVICE BRAKES, HYDRAULIC). The contact stated that while driving 70 MPH, the vehicle lost motive power and stalled. There was no warning light illuminated. The contact was unable to coast over to the side of the road. There were no warning lights illuminated. The contact stated that the vehicle failed to restart. The vehicle was towed to the dealer where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired and remained with the dealer. The manufacturer was notified of the failure. The failure mileage was approximately 82,000.

- Memphis, TN, USA

6.2l engine catastrophic engine failure with appt 17,000 miles on odometer. Kendall Chevrolet of marysville Washington has new engine on back order.

- Snohomish, WA, USA

1st incident- Engine had a bad lifter and cam shaft with 46,000miles. When this happened I was going through a railroad crossing, if the failure was bad enough and locked the engine up I would have been stuck on the tracks with my family. This issue could cause the motor to lock up if the lifter or cam shaft had a more serious failure. Dealer confirmed the lifter and cam shaft were bad and replaced. the engine had a vibration 2 weeks before the failure but the dealership could not identify or duplicate the issue. Vehicle was in the shop for 35 days to repair. 2nd incident- Parking brake and brake system locked up and would not release until the vehicle was reset. Scheduled vehicle to be towed in and the brakes locked up again while loading the vehicle to tow. Dealer is still troubleshooting the issue after 5 days. Errors on screen "Forward Collision System unavailable, Brake system failure 43mph top speed, Service steering column lock, service traction control, Service ESC, Service Brake Pad Monitor" If this happened while on the highway it had the chance to cause a serious wreck.

- Stockdale, TX, USA