I am submitting this complaint regarding my 2023 Chevrolet Tahoe equipped with the GM 6.2-liter V8 engine. VIN: [XXX]. At approximately 40,000 miles, the original engine experienced a major failure and was completely replaced by a Chevrolet dealership under warranty. I have now driven fewer than 10,000 miles on the replacement engine and am experiencing a very similar engine-related problem again. The vehicle is currently back at the Chevrolet dealership being inspected and repaired. This is extremely concerning because the original engine failed at only approximately 40,000 miles, and the replacement engine has developed a similar problem after fewer than 10,000 miles. The GM 6.2-liter V8 has been the subject of numerous reported engine problems and complaints, and I believe this repeated failure warrants NHTSA’s attention. I am concerned there may be an underlying or recurring defect affecting these engines that has not been adequately addressed. I am also concerned about the potential safety implications of an engine or valvetrain failure while driving. An unexpected loss of power or significant mechanical failure could create a dangerous situation, particularly at highway speeds or in traffic. I can provide dealership documentation showing the original engine replacement, the mileage at which it occurred, and the current repair visit. This documentation establishes that the vehicle has experienced significant engine-related problems twice within a relatively short period, including a similar problem with the replacement engine after fewer than 10,000 miles. I respectfully request that NHTSA document this complaint and review whether there is a broader pattern of premature or repeated failures involving the GM 6.2-liter V8 used in 2023 Chevrolet Tahoe vehicles and whether further investigation or corrective action is warranted. Replacing the original engine did not resolve the issue, as the replacement engine has now developed a similar problem. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Source: NHTSA complaint ODI #11764926 · view all complaints for this vehicle at nhtsa.gov

We were driving full speed down the highway and the vehicle completely shut down steering wheel locked and we were stranded for six hours. Turns out the dealer said it was just the battery and they fixed the grounding of the battery. I’m sorry but I’m not satisfied with this response. I’m scared to drive this vehicle.

Source: NHTSA complaint ODI #11761638 · view all complaints for this vehicle at nhtsa.gov

The car has cut off three time while at stoplights. I can get it restarted but the dealership cannot duplicate it even though there are codes in the system. Also the automatic braking will randomly stop when it shouldn’t and it is a hard braking.

Source: NHTSA complaint ODI #11734328 · view all complaints for this vehicle at nhtsa.gov

Hard shudder when driving between 45 to 50 mph and when you decelerate around 12 to 15 mph. Inspected at Lond Lewis Chevrolet stated and now being inspected by Bentley Chevrolet due to Lond Lewis Chevrolet doing absolute nothing. Tahoe has 23,000 miles currently. Bought new one owner always serviced as should.

Source: NHTSA complaint ODI #11763723 · view all complaints for this vehicle at nhtsa.gov

The contact owns a 2023 Chevrolet Tahoe. The contact stated while driving 10 MPH, the air bag warning light illuminated. The vehicle was not taken to a dealer or independent mechanic to be diagnosed or repaired. The manufacturer was made aware of the failure and was referred to the NHTSA Hotline to report the failure. The approximate failure mileage was 39,144.

Source: NHTSA complaint ODI #11629948 · view all complaints for this vehicle at nhtsa.gov

Following a GM-initiated over-the-air (OTA) software update on May 18, 2026, my vehicle's windshield wipers became permanently inoperable — stuck in the "on" position with no ability to turn them off. This is not a gradual mechanical failure or wear-and-tear issue. The malfunction began immediately and directly as a result of a software update pushed by General Motors. Because the wipers cannot be controlled, I have been forced to remove the wiper fuse to make the vehicle driveable. This means I am currently operating a vehicle without functional windshield wipers — a federally mandated safety system. I want to be clear: this unsafe condition was caused entirely by a GM software update, not by any action or negligence on my part.

Source: NHTSA complaint ODI #11744525 · view all complaints for this vehicle at nhtsa.gov