2025 Chevrolet Tahoe engine problems

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 26, 2026 · Engine · TX

While driving on the highway, the engine started making a knocking noise and the vehicle shut down causing us to have to pull over on the side of the road in the middle of highway traffic. The engine light came on and the vehicle would no longer drive leaving my family stranded on the side of the highway. The vehicle had to be towed 200 miles back home.

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 28, 2026 · Engine · FL

Began to accelerate to pass a slower vehicle on the highway. Just as it started to accelerate the engine abruptly shut off and the vehicle began decelerating. Many warning messages came up on the dashboard but none were present prior to the event. Was able to coast onto the shoulder of the highway before stopping. Attempted to restart vehicle but it would not restart. Vehicle was towed to the nearest Chevrolet dealership where they were able to assess that something inside the motor had failed and caused it to lock up.

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 29, 2026 · Driver assistance, Engine · NV

My Vehicle has a 5,3 engine it now has 23000 miles. It goes to the dealership for all the oil changes. I check my dipstick before I took it in for service and warranty work for a third time first time at this dealership. But noticed there was no oil on the dipstick. So I went to auto zone and bought a new 3 gallon container and funnel. So they changed my oil and put it in and I got my vehicle back and I now bought a clear 2 gallon measuring bucket to see how much oil I had in it. I just videod my pour into the container and it is 3 quarts low. I was under the 7500-mile mark that gm requires you to change the oil. This is a new vehicle, and I shouldn't see this happening at all maybe 100000 miles but not 23000. I also just found out I have a one of a kind 2025 Tahoe with the new 2026 software that is completely messed up. The dealership wiped out critical engine data and no that is at zero when I picked it up. And the calculation for engine hours and idle is not the true numbers and it is corrupted. The other dealership didn't know my vehicle has the new data. So I can only assume they made a big mistake releasing this vehicle. So I also have a driver's seat that goes snap or clunk. Everything with GM has Bulletins. I didn't buy a 86000 dollar used piece of junk i bought a brand-new truck. And Gm will not let the dealership tear into the engine to find out what the noise is and the damage. I use a stethoscope and you can hear the lifters and rockers on the left bank, and the front makes strange noises and it has a hollow sound also. So sensor collision avoidance issues since the day I bought it. And with all the corrupt downloads from whatever software they used has destroyed my Tahoe along with the engine. I have video evidence also and the oil that just came out of my vehicle was gross dark and disgusting and smelled to high heaven. I need help

Filed Aug 24, 2026 · Engine · FL

I have 19,000 miles. After each oil change, the engine begins to idol rough, the vehicle violently shakes and the traction control and ABS turn off. The first time this happened it was determined that there was a cylinder (4) failure causing a missfire. This was corrected under warranty. A few months later immediately after receiving an oil change again, the same actions occurred. This time the computer is showing a cylinder (7) failure and engine missfire. This is very similar to what is happening on the 6.7 L GM recall l, but I don’t have the 6.7 I have the 5.8. I believe the issue is bigger than just the 6.7 L.