2019 Chevrolet Tahoe: misfire or rough idle

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 Aug 31, 2026 · Engine · 80,118 miles · OH

The contact owns a 2019 Chevrolet Tahoe. The contact stated that while driving at an undisclosed speed, there was a misfire coming from the engine and the vehicle lost motive power and was violently shaking. The check engine warning light illuminated. The vehicle was towed to the dealer where it was diagnosed with a collapsed lifter in cylinder #7. The contact was informed that the engine needed to be replaced or rebuilt. The vehicle was repaired. The contact stated that the left side of the engine was rebuilt but the failure reoccurred. The vehicle was towed to the dealer where it was diagnosed with a failed cam lifter in cylinder #6. The contact was informed that the right side of the engine needed to be rebuilt, or 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 80,118.

Filed May 23, 2026 · Engine, Fuel system · HI

While driving, the engine started to shutter and run rough. Pulled over to check and see if everything was ok. When restarting engine it developed a ticking noise which got worse and worse. We then made an appointment at a transmission specialist to get it serviced. While driving there the engine started experiencing engine failure with loss of power and loud ticking noise. Diagnostic from trans shop showed issues with engine and cylinder 4 misfire detected. Yes, the vehicle can be inspected upon request. Safety was put at risk while driving when engine started to fail. Had to pull over and have towed. Independent service center has confirmed issues. Report in attachments. No warning lamps or messages appeared prior to failure issues. The issues first started on March 18th 2026. SUV has been un drivable since. We have been unable to find a repair shop who is willing to do the repairs needed. The vehicle really needs a whole new engine.

Filed Dec 30, 2025 · Engine · CO

My 2019 Chevrolet Tahoe Premier equipped with the 6.2L V8 engine has experienced a major internal engine failure. The dealership diagnosed camshaft bearing failure with a recorded misfire on cylinder #5. The engine oil was drained and inspected and no significant metallic debris was found, and the dealership noted no evidence of abuse or neglect. Intermittent drivability concerns were present over the life of the vehicle and were addressed through professional diagnosis and repair each time. The vehicle has been properly maintained since new. Just months prior to this failure, the vehicle underwent full diagnostics and significant repairs, and no internal engine failure was identified. This failure appears consistent with a known defect pattern affecting GM 6.2L engines involving internal valvetrain or camshaft-related failures. The failure resulted in abnormal engine noise, misfire, loss of power, and the vehicle becoming unreliable for safe operation. General Motors has declined goodwill assistance citing warranty expiration, despite the nature of the failure being a non-wear internal engine defect. I am submitting this complaint so this VIN and failure can be reviewed as part of any ongoing investigation into 6.2L engine failures.

Filed Apr 30, 2025 · Acceleration, Engine · TX

While attempting to accelerate to merge onto interstate/freeway from highway speed of 55mph, experienced significant engine misfire & loss of speed. This happened less than 40 days after purchase of this used vehicle from local dealership, with 30 day "warranty". Vehicle is currently NOT safe to drive.