2025 Chevrolet Tahoe: engine failure

Filed Nov 2, 2026 · Engine · NY

This is in regards to my 2025 Chevy Tahoe High Country with 12,300 miles. I was driving on the parkway during rush hour and when I took the exit ramp I head a loud ticking. I immediately pulled over as the noise was loud and became louder and faster upon acceleration. I had the car towed to my hometown dealership approximately 36 miles away. The dealership concluded that the engine was damaged beyond repair and I was getting a new engine. When I inquired to why and what was the damage, they told me that the only way to figure out the root cause of the engine damage was to do a total engine breakdown which requires 15 man hours to do. No warning lights came on and the car showed no issues before this incident.

Filed Oct 21, 2026 · Engine · MD

This report is related to the federal safety agency EA26005 Investigation. My 2025 Tahoe had an engine failure while on a trip. The speed was approximately 55 mph. The SUV was in L9 transmission setting driving up a slight grade on the highway. The engine RPM was approximately 2,000 RPM. Engine oil press, according to the instrument gauge was 48-50psi, engine temp was normal. Started to hear a rumbling sound and at first thought it was the radio, turned down radio volume and realized it was coming from engine compartment. There were no warning lights or other preliminary indications other than noise. The RPM dropped to around 1400-1500 at the same approximate throttle pressure I had and oil pressure shot up to 60 psi and remained there. During the time the engine continued to operate with a loud racket there were no advisory lights other than the high oil pressure and lower RPM. Slowed down. Due to the road topography, there were no safe areas or shoulders to pull off to side of road. Fortunately there was no traffic coming towards me or behind me. I was able to continue at slow speed for approximately 4 miles until reaching intersection of [XXX] and [XXX] and was able to safely pull of to the side of the road. Since there was no cell phone service in the area, I was able to talk with a person nearby who took me to a garage several miles away to arrange for tow service. The Tahoe only 13,400 miles on it. It had two oil changes with the GM recommend oil, 0W-20 dexos1 Gen3 and GM filter. The oil had been changed two weeks before the engine failure and the oil level was checked by me prior to the start of the trip. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 16, 2026 · Engine, Fuel system · OR · fire

On September 5, 2026, at approximately 7:18 p.m. Pacific Time, a 2025 Chevrolet Tahoe High Country equipped with the 6.2L L87 V8 engine and approximately 18,000 miles experienced a sudden catastrophic failure while the engine was running. There were two occupants. A distinct pop was heard. The engine immediately lost power and multiple dashboard warning lights/messages began flashing. Within approximately 20-30 seconds, smoke and an electrical-burning odor were noticed. The vehicle was shut off manually and both occupants exited. Flames were first observed toward the rear of the engine compartment. The fire spread extremely rapidly, and the vehicle was substantially engulfed within approximately two minutes and completely destroyed. The sudden loss of propulsion created a crash risk, and the rapid fire placed both occupants at risk of serious injury or death. No physical injuries were reported. The precise failed component and fire origin have not yet been determined. The vehicle had received an oil change from an independent service facility within approximately 30 days before the incident. The cause has not been confirmed by GM, a dealer, or an independent fire expert. The vehicle is involved in an active insurance total-loss claim; inspection should be coordinated promptly before the salvage is released, dismantled, sold, or destroyed. More than 100 photographs and several videos taken during and after the fire are available. A fire department report is pending. Because the federal safety agency Engineering Analysis EA26005 includes 2021-2026 GM vehicles equipped with the L87 engine and later-produced engines outside Recall 25V‑274, please associate this complaint with that investigation and evaluate whether an L87 engine failure initiated the fire.

Filed Sep 15, 2026 · Engine · FL

Engine seized up and needs replacement.

Filed Sep 1, 2026 · Engine · CO

On approximately January 15, 2026, my 2025 Chevrolet Tahoe equipped with the 6.2L V8 engine suffered a complete engine failure at approximately 10,000 miles while my family and I were traveling about six hours from home. The engine/propulsion system failed and the vehicle became inoperable. The specific internal engine component that initially failed is UNKNOWN. The sudden failure put my family at risk because we were stranded far from home with an inoperable vehicle. The Tahoe had to be taken to an authorized Chevrolet dealership, where the engine failure was confirmed and warranty repairs were performed. General Motors opened Chevrolet Customer Assistance case number 87586632 on January 16, 2026 and communicated with the dealership throughout the repair. The Tahoe remained at the dealership awaiting repairs and parts through at least February 4, 2026. GM correspondence confirms that the vehicle had been returned to us by February 7, 2026. The vehicle was unavailable for approximately three weeks. Prior to the failure, OnStar sent a low 12-volt battery alert on January 15, 2026. I do not know whether that alert was related to the engine failure. On February 2, 2026, while the vehicle was still undergoing repairs, OnStar sent a critical engine and transmission system diagnostic alert. Any other warning lamps, messages, noises, or symptoms immediately preceding the failure are UNKNOWN. The vehicle was inspected and repaired by an authorized Chevrolet dealership, and General Motors was involved through its Customer Assistance department. Whether a GM representative separately inspected the failed engine is UNKNOWN. The vehicle was not inspected by police or an insurance representative to my knowledge. Whether the original failed engine or its components are still available for inspection is UNKNOWN; the dealership or General Motors may have retained them. 2025 Chevrolet Tahoe, case number 87586632.

Filed Aug 30, 2026 · Engine · OK

2025 Chevrolet Tahoe, 6.2L L87, approximately 51,500 miles, rod-bearing/internal engine failure, complete engine replacement required. 1500 miles prior to engine failure the cam/lifters were replaced. Repair invoices are attached. I was told my warranty going forward would be the remaining miles left on my 60k power train warranty. This is not acceptable.

Filed Aug 13, 2026 · Engine · MA

Blown engine, large chunk of metal in the oil pan

Filed Jul 29, 2026 · Engine · KS

My 2025 Chevrolet Tahoe RST Performance Edition equipped with the 6.2-liter V8 experienced a catastrophic engine failure at approximately 28,400 miles. The Tahoe was towed to an authorized Chevrolet dealership. The dealer confirmed an internal engine failure requiring complete engine replacement. The vehicle and failed engine are currently at the dealership in Lawrence, Kansas, and should be available for inspection upon request. The precise internal cause has not yet been provided to me in writing. I was advised that obtaining and installing the replacement engine is expected to take approximately 60 to 90 days or longer. The scheduled 30,000-mile maintenance was performed by the Chevrolet dealership on June 29, 2026, when the odometer read 27,607 miles. The engine failed less than two weeks later, after approximately 800 additional miles. Two days before the failure, I noticed a knocking or ticking sound from the engine. Immediately before the failure, I heard loud squeaking or screeching followed by a severe metallic clanking sound, as though loose metal components were being thrown around inside the engine. The engine then shut off and the vehicle became immobilized in Park at an intersection. I was the first vehicle in a left-turn lane and could not shift the Tahoe into Neutral to push or coast it out of the roadway. Heavy traffic turning toward the highway was forced to maneuver around the disabled vehicle, creating a significant risk of a collision. The outside temperature was approximately 95 degrees, with a heat index of approximately 109 degrees. My dog was with me, and it took more than an hour to arrange transportation for him to a safe location before I could return to the disabled vehicle and continue waiting for the tow truck.

Filed Jul 14, 2026 · Engine, Transmission · FL

This 2025 Chevrolet Tahoe has experienced three separate and recurring engine-related failures. The first failure occurred at approximately 41,350 miles and required replacement or repair of the lifters and camshaft. The vehicle remained at the dealership for approximately 15 days. The second failure occurred at approximately 54,619 miles and involved another lifter failure along with traction control problems. The third failure occurred at approximately 65,140 miles. The Check Engine warning light illuminated while the vehicle was being driven, and the vehicle again experienced engine-related problems. The vehicle has now been at the dealership for more than one week, and no repair or permanent solution has been provided. I am concerned that these repeated engine failures and traction control problems create a serious safety risk, particularly because the vehicle is driven on public roads and highways. Despite previous repairs, the engine problems continue to recur. I am requesting that the federal safety agency investigate these repeated safety-related failures.

Filed Jun 24, 2026 · Engine · NY

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.

Filed Apr 25, 2026 · Engine · TX

Vehicle power loss, some shaking with no warning lights on dashboard. Dealer confirmed it was engine failure.

Filed Jan 25, 2026 · Engine · CA

Complete engine failure.