The 6.2L L87 V8 engine in my 2020 Chevrolet Tahoe Premier RST suffered a catastrophic internal component failure while operating. The engine experienced a sudden, severe internal mechanical breakdown involving the crankshaft or connecting rod bearings, completely disabling the powertrain.This failure causes an immediate and dangerous loss of vehicle propulsion, creating a severe safety hazard on public roads.General Motors has already issued Safety Recall N252494001 (NHTSA Campaign 24V924000) for identical L87 engine bearing failures, but has arbitrarily limited the scope to 2021–2024 model years. My 2020 vehicle uses the exact same L87 engine family and has suffered the exact same catastrophic defect.I am filing this report to urge the NHTSA to expand its current Engineering Analysis (RQ26001) and force General Motors to expand the safety recall to include 2020 model year vehicles before more consumers experience sudden engine failure while driving."

Source: NHTSA complaint ODI #11754970 · view all complaints for this vehicle at nhtsa.gov

On multiple occasions, my car has locked my keys on the INSIDE of the vehicle. I have put things inside my vehicle before leaving and closed all the doors, upon returning, even just a few minutes later, my doors are locked and I am locked out of my vehicle. Additionally, my car is not detecting my remote. I cannot unlock my car with the buttons on the door and need to have my keys in hand for my car to detect the fob. Additionally, if someone opens the door while the car is running but in park, and then closes the door, the Car will beep as if there is no longer a remote detected. This has happened on multiple occasions. I have changed the batteries in the fobs multiple times, switched out my fobs so I was using a different fob and it has happened with both of my fobs.

Source: NHTSA complaint ODI #11709665 · view all complaints for this vehicle at nhtsa.gov

I own a 2020 Tahoe, 160,000 miles. While driving, the vehicle experienced a sudden loss of brake assist due to a failure of the vacuum brake pump. The brake pedal became extremely hard, and the vehicle would not slow or stop as expected, requiring me to put vehicle in neutral and frantically find a way to the shoulder to force a stop (pulling the emergency brake). This created a dangerous condition and significantly increased stopping distance, posing a serious safety risk to myself, and others on the road. There was little to no warning prior to the failure. This issue appears to be consistent with known complaints involving vacuum pump failure and loss of brake assist in similar vehicles. A failure of the braking assist system is NOT a normal wear condition and presents a critical safety hazard. I am reporting this incident due to the safety risk associated with sudden brake assist failure and the potential for accidents or injury. Vehicle issue has been confirmed by an independent service center. There was a warning light that appeared at the same time the brake stopped working leaving me no time to plan or know ahead not to drive.

Source: NHTSA complaint ODI #11733810 · view all complaints for this vehicle at nhtsa.gov

Suddenly lost all power steering, then warning power steering attention, no control for steering, very dangerous, couldn't drive vehicle. Took independent car repair to fix. $5k repair to fix problem. Should not happen to vehicle.

Source: NHTSA complaint ODI #11725362 · view all complaints for this vehicle at nhtsa.gov

The contact's brother owned a 2020 Chevrolet Tahoe. The contact stated that while his brother was driving at an undisclosed speed, the vehicle crashed; however, the contact was unsure what the vehicle had crashed into. The contact stated that the crash was a single vehicle crash and there was severe damage to the front of the vehicle. The contact stated that the air bags should have deployed but failed to deploy. The contact stated that medical attention was needed, and his brother was currently in the Trauma ICU after recently having back surgery. The contact stated that a Police Report was filed but was not yet finalized. The contact was waiting to speak with the Police Officer who filed the report. No further information was available. The failure mileage was unknown.

Source: NHTSA complaint ODI #11701729 · view all complaints for this vehicle at nhtsa.gov

The air conditioning system fails to cool. My vehicle only has 47,000 miles on it currently and is well-kept. A professional garage inspected and advised that there was a leak in the refrigerant system. I contacted my local Chevrolet dealer Jeff Gordan Chevrolet where I purchased the vehicle new and they said the issue was not under warranty and that my warranties had expired. They would not repair the air conditioning system at no cost to me, the owner.

Source: NHTSA complaint ODI #11730381 · view all complaints for this vehicle at nhtsa.gov