*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Vehicle speed control
Vehicle accelerating on its own. It is not in cruise control mode. Accelerating without any pressure on the pedal. Engine revs when in park. Really jerky when coming to a stop
Oct 25, 2026Service brakes, hydraulic
The contact owns a 2026 Chevrolet Tahoe. The contact stated that while his wife was driving 45 MPH, the brakes failed to engage while depressing the brake pedal. The contact's wife pulled into a parking lot, shut off the vehicle, and allowed the vehicle to coast in the parking lot until the vehicle came to a complete stop. Due to the failure, the vehicle was towed to a dealer but was not diagnosed or repaired. The failure mileage was 4,873.
Oct 5, 2026 · 4,873 milesPower train
While driving the vehicle at highway speeds the vehicle starts to lurch or randomly lose power. Eventually, within a few minutes, the lurching gets worse and the check engine light starts flashing. In a GM vehicle, a flashing check engine light is critical engine failure. After pulling the vehicle to the side of the road, the check engine light stops flashing and stays on constantly. After about 10-15 minutes, the check engine light turns off completely. The GM dealership can read the history and says it's P0300 error code for General Engine Misfire in cylinder #6. GM warranty refuses to fix anything because the light isn't on when the car comes into the dealership. The car has been to two…
Jan 18, 2026Engine
At approximately 4,200 miles, the engine on my 2026 Chevrolet Tahoe High Country equipped with the 6.2L V8 suddenly shut off while the vehicle was stopped at a traffic light. There were no warning lights, messages, unusual noises, or other symptoms prior to the failure. The vehicle would not restart and had to be towed to an authorized Chevrolet dealership. The dealership initially suspected a camshaft/lifter or related engine issue and performed diagnostic and mechanical testing. The dealer also opened a case with General Motors. GM subsequently directed the dealership to perform an ECM software update. After the update, the engine started and the vehicle appeared to operate normally. As…
Sep 11, 2026Engine
Driving on the interstate and vehicle started slowing down then abruptly stopped. We were able to get onto the shoulder of the road. The gear would not stay in drive mode continuing to slip out of drive and into park. We made it to a dealership in Knoxville tn where we had to leave it..
Sep 4, 2026Engine
Engine started "ticking" for a bit. Then sounded like marbles were in the engine. Loss of power and engine light came on. Dealer says my 6.2 engine failed and new one needed. Less than 9000 well cared for miles!
Sep 1, 2026Engine
Driving on the Highway the Engine failed at highway speeds and the Tahoe experienced a complete shutdown, we could not restart the vehicle nor shift to neutral. We had the vehicle towed and was told by the dealer that it needs a engine replacement at 14,000 miles.
Aug 29, 2026Fuel system, gasoline
The contact owns a 2026 Chevrolet Tahoe. The contact stated that two hours after parking the vehicle in the garage and turning off the vehicle, there was excessive heat coming from the vehicle, and the vehicle was extremely hot to the touch above the wheel well. Due to the heat coming from the vehicle, the contact stated that it was difficult to breathe while inside the garage. The vehicle was taken to the local dealer, but no failure was found with the vehicle. Later, while driving the vehicle, the vehicle lost power, and the check engine warning light was illuminated. The vehicle was driven back to the nearby dealer and was diagnosed with a fuel pump module and fuel pump hose failure. The…
Jul 31, 2026 · 129 miles
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.
