Buick ENCLAVE

Catastrophic engine failure. We were left stranded in [XXX] while on a trip. No warning lamps. Vehicle was towed and inspected by the Buick dealership service department. Took 3 months to get our vehicle back which had to be transported back to the state in which we live. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

My wife's 2025 Buick Enclave with less than 10,000 miles (around 9,800) stranded us on the highway. Transmission was shuddering and felt like we were hitting rumble straps on acceleration. Then, we couldn't go over 18 mph, then it just stopped. Couldn't even pull off to the side of the road because the electronics wouldn't let the vehicle go into neutral to allow us to push it onto the shoulder. Eventually we got it off the Interstate to a residential area. When tow truck arrived, they couldn't get it into neutral and had to drag it onto the wrecker with generous amounts of WD-40. That can't be good for the vehicle. The vehicle is at Randy Wise Buick in Fenton, Michigan. We were lucky not to have been hit on the Interstate. Biggest worry is not the transmission problem but that we couldn't even push it off the roadway.

While slowing down with foot of accelerator, to stop at an intersection, the rear wheel’s momentarily locked up.

Car was purchased on 1/2/25 and first issue with vehicle was on 1/30/25 for check engine light. Feb 20,2025-Check engine light, car shakes, radio and dash go in and out, passenger rear window screeches. issues fixed except vibration. May 26, 2025 check engine light. rear window still making noise-fixed . Trunk gets stuck-no fix. Unaligned lane assist, car continues to shake. Sept, 26 2025-Brakes continue to make noise and now pulsate. Dealer found that pads and rotors were warped and had discoloration, and were replaced under warranty at 11,845 miles. CAR WAS IN SERVICE FROM SEPT 26-OCT 23, 2025. BRAKE NOISE STARTED 2 DAYS LATER-TEXTED ADVISOR Dec 4-Car continues to shake and brakes continue to make squealing noise. Have email from GM TAC stating "SOME noise from the brakes is a normal characteristic, especially if the brakes are cold or wet. this is a condition we have no control over as it has to deal with the environment and weather. I LIVE IN FLORIDA! CAR WAS IN SERIVCE DEC 4-DEC 26, 2025. NO RESOLUTION AGAIN Feb 6-Car leaking and overheating, passenger rear window not going down, exterior antenna cover came off, still shaking and brakes still squeaking. I WAS TOLD BRAKES ARE NO LONGER UNDER WARRANTY AND NOTHING THE CAN DO AFTER 7,500 MILES YET THEY WERE PREVIOUSLY REPLACED AT 11k MILES AND I'VE VOICE CONCERN FOR MONTHS AND NOTHING WAS DONE BEFORE. AND OTHERS WERE REPLACED EVEN OVER 7,50MILES I am concerned over the safety of myself and my family with these continues brake issues.

See attached document for complaint.

Digital dash display is completely black. There is no display of speed, lane departure, back-up camera or parking assist/surround view camera. Neither vehicle restart nor software reset corrects the issues.

What component or system failed or malfunctioned, and is it available for inspection upon request? - Had to do with the Transmission. Something about internal loose bolts from the factory in the torque converter that cause transmission fluid leakage and making the car undrivable. Might be related to PIP6005 or CSP N242473580) How was your safety or the safety of others put at risk? Not being able to take off from a stoplight could have been easily rear ended. Had it broke a came to a complete stop on the interstate, my wife and kids could have been killed from high speed impact at the rear of the vehicle could have life impacting injuries or death. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Inspected by Dealer Don Hewlett Chevrolet Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? None at all

What component or system failed or malfunctioned, and is it available for inspection upon request? The engine and/or powertrain system catastrophically failed while the vehicle was in motion on the freeway. The vehicle lost power, shut down, and became disabled. The vehicle is currently in the possession of the Buick dealership and is available for inspection upon request. How was your safety or the safety of others put at risk? The failure occurred while driving my husband and children in fast-moving freeway traffic. The vehicle suddenly lost power and shut down, forcing us to coast to the shoulder while traffic was moving around us. This created an extremely dangerous situation that could have resulted in a serious crash, injuries, or fatalities to my family and other motorists. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. The Buick dealership confirmed the engine failure and advised that the vehicle needs a replacement engine. The vehicle was towed directly to the dealership following the incident and was declared inoperable. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? The vehicle has been inspected by an authorized Buick dealership service department. The manufacturer (GM/Buick) has been notified, and a corporate case has been opened. Were there any warning lamps, messages, or other symptoms of the problem prior to the failure, and when did they first appear? Yes. Multiple warning alerts appeared immediately before the shutdown, including critical warnings such as low oil pressure and instructions to turn the vehicle off. Moments later, the vehicle lost power completely and shut down.