Chevrolet Tahoe engine failure problems

Filed Nov 3, 2026 · Engine · 113,000 miles · OH

The contact owns a 2018 Chevrolet Tahoe. The contact stated that while driving 15 MPH, there was an abnormal sound coming from the vehicle. The vehicle was taken to an independent mechanic where it was diagnosed with engine failure. The vehicle was taken to the dealer where it was diagnosed with engine failure. The contact was informed that the lifters and cam shaft needed to be replaced. The vehicle was repaired. In addition, the contact was informed that the failure was a known failure with the vehicle. The failure mileage was approximately 113,000.

Filed Nov 2, 2026 · Engine · NJ

Engine failure at2000miles, then at 80000

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 Nov 2, 2026 · Engine · TN

Engine failures, dealers will not address the issue as related to 21 they 24 recalls

Filed Oct 30, 2026 · Engine · MI

I own a 2023 Chevrolet Tahoe equipped with the 6.2L V8 engine. The vehicle has experienced repeated significant engine problems, including a previous complete engine replacement and subsequent issues with the replacement engine. The original engine required replacement due to engine-related problems. Following that replacement, the vehicle developed lifter noise and required another extended stay at the dealership for repairs. The vehicle has now been out of service for approximately 4–5 weeks while the dealership attempts to diagnose and repair the issue. After the dealership completed work to address the lifter noise, the technician identified an additional concerning engine noise. The dealership has since reported suspected bottom-end damage in the crankshaft area and has escalated the findings to GM engineering for further diagnosis and repair recommendations. I am concerned about the recurring internal engine failures, particularly given that this is the second engine installed in the vehicle. These problems raise serious concerns about the reliability and safety of the 6.2L engine. A failure involving the crankshaft, connecting rods, or internal engine bearings could potentially result in sudden engine failure or loss of power while driving. The vehicle has been inspected by an authorized GM dealership, and the current suspected damage has been reported to GM engineering. The final diagnosis and recommended repair are still pending. I am requesting that the federal safety agency review these repeated engine failures, including failures involving replacement engines, and investigate whether there is an ongoing safety or manufacturing defect affecting these vehicles.

Filed Oct 25, 2026 · Engine · NC

The car had the recall done for the engine issues 1 year ago. Pico test past and oil was changed to new oil. All service is handled by Chevrolet dealer. Now the issue. After leaving home and driving on a highway for about 25 minutes I received lights on the dashboard indicating. Several issues. Flashing engine light, ecm issue amoung some others. I then noticed what sounded like a missfire of the engine. Since I was on my way out of town I decided to turn around and take directly to dealer. I dropped the car off. When I finally turned the car off at the dealer lot and restarted it I also noticed metal clanging coming from engine. The next day I was texted by the dealer that I would be getting a new engine. Car has 78,644 miles.

Filed Oct 25, 2026 · Brakes, Electrical · MD

Description of the safety problem On XXX, shortly after starting the vehicle and beginning to drive, I attempted to apply the brakes and discovered that they had essentially frozen up and were not functioning properly. At the same time the vehicle displayed the following warnings: Service ESC, ABS warning light, brake system warning light, "Trailer Brakes Disabled – Service Required," traction/stability control warning, and check engine light. I shut the vehicle off and restarted it. After the restart the brakes appeared to function normally again and most warning indicators disappeared. However, the check engine light remains illuminated, and I have noticed a slight hesitation when starting the vehicle. I have photographs of the warnings taken at approximately 21,029 miles. Relevant history This vehicle was purchased new. The original 6.2L engine suffered a catastrophic failure at approximately 18,685 miles while traveling at highway speed and was replaced under warranty. None of the current problems existed before that engine replacement. Since the replacement, the vehicle has experienced multiple electrical failures, including windshield wipers becoming inoperative while driving in rain, intermittent loss of electrical power and starting problems, steering-related and collision-system warnings, and tire-pressure warning discrepancies. During a recent dealership visit to Ourisman Chevrolet (service advisor [XXX]) for multiple electrical malfunctions, I was told the problem was simply that the battery needed to be charged. The problems have continued, culminating in the XXX braking malfunction. Request I am reporting this as a potential safety defect affecting the braking, stability control, and electrical systems of this vehicle, and I request that the federal safety agency record and review this complaint. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 21, 2026 · Engine · TX

At approximately 80,700 miles, I started my 2019 Chevrolet Tahoe (6.2L V8) to take my family on errands. My wife heard a squeaking noise from the engine as she walked to the vehicle, and I got out and heard the same noise. No warning lights or messages appeared on the dashboard, before or after. I took the vehicle to an independent repair shop, expecting a belt problem. After inspection, the shop told me the valve lifters had failed and needed replacement, and that the camshaft would likely need replacement as well. I declined the repair and took the vehicle to a GM dealership for inspection and documentation. The GM dealer confirmed the lifters need replacement. They could not confirm whether the camshaft is also damaged without an engine tear down, which I have not authorized. The dealer estimated $13,200 to replace the lifters and camshaft. The independent shop estimated $8,200. The vehicle has not been repaired, and the failed components are still in the engine and available for inspection. I am concerned for my family’s safety. Lifter failure on this engine can cause misfires, loss of power or engine failure while driving. We use this vehicle to transport our family, and a sudden loss of power on the road could cause a crash.

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 Oct 20, 2026 · Engine · MO

At 60,720 on car miles engine failed. This is the second engine failure. Dealership perfomred test per recall on second engine, and engine failed less than 30,000 miles later. Experienced loss of power for a few minutes before failure. The replacement engine had 52,000 miles on it.