2024 Chevrolet Tahoe

Engine locked up from crankshaft bearing failure, mega fuse blown My wife and I were driving 70mph on a highway when I lost the throttle and other power. I pulled over to the side the best I could but barely over the white line. It was a dangerous situation for us & tow trucks, the engine was locked up & the flat bed truck couldn't tow vehicle. The 2nd truck was a reaper style truck which was dangerous to setup on the side of highway. The dealership diagnosed and replaced engine to their guidelines. I requested the oil cooling lines & housing be replaced as well to avoid metal debris to enter new engine to avoid recurring engine failure. At first both requests were denied, then another dealer represntive said the oil lines would be replaced but the housing would not be. I even offered to pay for that replacement which was denied. I invested a lot into the vehicle, I was assured the original recall and engine oil change would be sufficient. I also purchased to dealer premium care package to really take care of my vehicle investment.Engine failure was around 29,000 miles. The engine failure happened on a Sunday morning, I didn't receive any loaner car or rental car until Thursday affecting my work transportation. Once the dealer rented me a car, I asked if I needed anything to pick up the car, dealer rep said no. Once at rental car place, I needed a credit card and ID, I was charged $250 for the time I had the rental car. The rental car was not close or comparable to my vehicle, which I still had to make payments while it was broken at the dealership. I really worry about my safety, reliability and travel going forward with this vehicle. I also am very concerned about the vehicle losing value due to known issues. There was no warning signs until the failure, I believe the dash message said 'please press start' or 'press start'. Overall this has been a tough and stressful situation with my expensive vehicle investment. Vehicle unavailable- 7/26-8/17

While driving, my Chevrolet Tahoe suddenly developed a severe, rhythmic bottom-end engine knock, indicating a catastrophic internal mechanical failure. I immediately took the vehicle to an authorized Chevrolet dealership on May 29, 2026, for emergency diagnosis.The dealership technicians officially diagnosed the issue as a severe lower-end engine failure. They deemed the engine unrepairable and determined that a complete long-block engine replacement is required.As of today, July 6, 2026, the vehicle has been sitting at the dealership for over 5 weeks and has yet to be fixed. The prolonged delay and sudden mechanical failure present a severe safety hazard, leaving me without a vehicle due to known GM manufacturing defects currently under NHTSA investigation. This report is being filed to document the failure of the 6.2L engine lower end, the necessity of a full long-block replacement, and the ongoing repair delay.

On Saturday, April 25, 2026, I experienced engine failure on my 2024 Chevrolet Tahoe 6.2L V8. This was a very dangerous situation, and could of been potentially dangerous to others around me on the highway. There was no warning just complete loss of engine propulsion at highway speeds. It was towed to the dealership on this same date. On Monday, April 27, 2026, it was confirmed by the Chevrolet Dealership that this vehicle suffered catastrophic engine failure and that the engine was seized up. Inspection would be available upon request.

The contact owns a 2024 Chevrolet Tahoe. The contact stated that while driving approximately 55-60 MPH, the vehicle stalled. No warning lights were illuminated. The vehicle was taken to the local dealer 10 times and the dealer retrieved diagnostic trouble codes for the control module, body control module, rear parking assistance, loss of communication, and transmission solenoid. The vehicle was not repaired. While driving at an undisclosed speed, the vehicle shifted out of the intended gear and shifted into neutral. The vehicle then went into LIMP Mode. The manufacturer was contacted and opened a case. The failure mileage was approximately 30,837.

The contact owns a 2024 Chevrolet Tahoe. The contact stated that while driving at 76 MPH, the vehicle was driving abnormally rough. The RPM increased, and the message to shut-off engine and restart the vehicle was displayed. The contact stated that the failure occurred while the two minor children and their friends were inside the vehicle. The contact's daughter stated that the vehicle was in neutral after leaving the car wash. In addition, the failure occurred while driving on a busy two-lane highway. The vehicle was almost involved in a crash twice when the engine seized in the middle of the left lane. The contact stated that while attempting to drive the vehicle to the shoulder of the road, the engine seized. The contact stated that while attempting to start the vehicle, the vehicle failed to restart. The local Police assisted with traffic control. The vehicle was towed to the dealer; however, the failure was not duplicated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The dealer was informed that the Mobile App indicated a transmission and engine failure. The dealer informed the contact that because the engine seized, the engine needed to be replaced. The dealer informed the contact that there was no indication of what caused the engine to seize. The manufacturer was made aware of the failure but provided no assistance. The contact referenced an unknown recall with a similar description; however, the VIN was not associated with the unknown recall. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 16,988.

Dealer checked the 6.2L motor for known defects. It "passed" inspection on 11/20/25 and got the thicker oil (OW-40). The engine lost propulsion ("died") 3 times on a 55mph State Highway on 02/09/26 with my 4 year old in the car with me. It died and came to a complete stop in one lane and would not re-start initially with cars almost rear ending us and needing to aggressively swerve to avoid hitting us. After 4 or 5 attempts it started again (making terrible grinding noises) so I could get it off the road before it died again. It started again to drive home on the back roads approximately 1 mile. Low oil pressure and check engine lights came on. I also received notifications from onstar and from the my Chevy app that there were severe motor or transmission problems. I scanned it with an OBD II Scanner and it has code P00016 (Camshaft Position Correlation - Bank 1 Sensor A). It got towed to the dealer and is now confirmed it is in need of a full motor replacement less than 3 months after they told me the motor passed inspection! This is not acceptable. To be told it's fine and then have it fail with my child in the car is extremely unsafe. Now I'm stuck trying to get a comparable loaner vehicle from the dealer to drive in the snow and mountains with my family safely while they expect to have the vehicle at minimum of 6 weeks. So far they have not found a loaner potentially putting my family in further danger by not having a 4X4 vehicle in a snowy climate.

The vehicle in question had approximately 5000 miles when low oil light came on, it was 2 quarts low. this was after the first oil change at around 3500 miles. I had the dealer do an oil consumption evaluation. They check the oil every 500 miles and confirmed it was using 2 quarts every 2500 miles. They informed me GM says this is normal. I cannot disagree more with that claim. GM knows they have a problem with the 6.2-liter engine. I have researched the issue and found they have a problem with the crankshaft machining and the oil delivery port beveling that delivers lubrication to the connecting rod bearing appears to be too large that causes the motor oil not to consistently keep the bearing lubricated. This causes the engine to be an "oil burner" and premature failure of the bearing. They think putting a heavier viscosity of oil in will delay the inevitable engine failure, which makes me believe they are aware of the faulty manufacturing and want to run from their warranty responsibilities.

Purchased new vehicle in September 2024, immediately after purchasing the vehicle the engine had a clanking noise. Took the car back to the dealership where they explained the noise was normal. The car continue to make clanking noise, but noise continued to get louder, took the vehicle back to the dealership for first oil change, verify the noise, and discuss safety recall received on the vehicle. Dealer told me the car was ok to drive. In October 2025, the vehicle loss power during acceleration with immediate re-start. After this incident, took the vehicle to another dealer where they inspected the vehicle again. The test failed and the car now needs a new engine. Car has now 10K miles in the odometer and has been sitting in the dealership for 3 weeks now waiting for an engine replacement.