2025 Buick Enclave

Driving at 30mph and all the dashboard lights turned on and all the warnings kept popping on the dashboard and 30 seconds later the brakes were not working when I was approaching a busy intersection. I was able to pump the brakes and stop the vehicle and put it in park and the vehicle shut off and nothing would work - not even the hazard lights. The vehicle is currently at the dealership being assessed.

I was driving and a variety of failure warnings popped up on my screen along with a total brake failure, unable to stop, had to coast until the vehicle was no longer moving. No accident resulted, but it could have been very serious. Mechanics diagnosed it as a loose battery cable.

The Automatic Emergency Braking (AEB) system activates unexpectedly and dangerously. Incident 1 5/7/2026: While driving approximately 2 mph in a drive-thru and rounding a curve, the vehicle suddenly applied full braking without warning. The braking force was severe enough that I struck my face on the steering wheel and my child was thrown forward in a secured car seat. Incident 2 5/19/2026: While merging onto a busy road behind a semi truck, the vehicle again applied sudden hard braking after I safely merged. This caused the vehicle behind me to nearly rear-end me, creating a high-risk traffic situation. These events occurred with no obstacle or reason that would justify emergency braking. In addition, the vehicle developed a coolant leak around 20,000 miles, raising concerns about overall reliability and potential related system issues. The unexpected braking presents a serious safety hazard and increases the risk of rear-end collisions and injury. The vehicle is being brought to a dealer for inspection, but the issue is intermittent and may not be easily reproduced.

The brakes make a squealing noise when backing up and this has been reported on many 2025 enclaves. There is also a repeated clicking noise after turning the vehicle off.

The contact owns a 2025 Buick Enclave. The contact stated that while driving at an undisclosed speed, the cruise control mode became inoperable, and the vehicle unexpectedly shut off. The contact also stated that while driving at an undisclosed speed, messages related to the braking system, forward collision system and the ABS were displayed. Additionally, the ABS was inoperable during inclement weather, and the vehicle became unsafe to drive. The contact pulled over to the side of the road because children were also inside the vehicle. The contact’s husband then drove the vehicle to the dealer, where the failure was duplicated, and several diagnostic trouble codes were retrieved. The dealer informed the contact that the failure was a known issue and that several technical service bulletins related to the failure had been issued. The vehicle was not repaired. The contact stated that the vehicle was unsafe to drive and posed a risk to the contact and other drivers. The manufacturer was made aware of the failure. The failure mileage was approximately 15,000.

The car frequently just slams on the brakes on its own when reversing. Doesn’t matter the speed, and nothing is behind me at all. It also triggers a check engine light with transmission errors if you get a car wash and it is even mildly cold. Transmission errors when it gets too cold or snow in the grill.

I had my new 2025 Enclave in the shop 8 times. Buick says, once??? GPS has gotten us lost 12 times. GPS had us exit [XXX], 3 times , do u-turns, only to get back on [XXX]. In Arcadia, FL. GPS had us do 3 left turns to get back where we were. Ace Hardware near me on [XXX] . I am on [XXX] . I can see Ace Hardware also on the street I am on. GPS wanted me to make SEVEN turns to get to where I could see. Going to Beall's on [XXX] . I am on [XXX] . I can see Beall's ahead on the left. GPS wanted me to pass Beall's, take a left on [XXX] . Go through the next subdivision and return to where I was9 now in Beall's parking lot). Two photos attached are me going to Ace and I can see it. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

This happens every single day, not just today, but are two separate issues related to my brakes. 1- squealing brakes. Every single day and for several miles before they warm up. The first time I brought this issue to the attention of the dealership, they replaced the brakes, and there was no squealing for just a few days. I forced the dealership within a week to let them know, I had to bring it back in, and they said they were fine and would just squeal. To this day, I have no idea if this is safe or not, but haven’t been able to receive a message that they squeal for any specified reason, which does not ease safety concerns. 2- my app told me that I had only 18% brake pad life remaining when I was around 11k miles. I took it in and they said they just reset the sensor without fixing the brakes because they didn’t know why it was doing that - its now clear to me that this isn’t an accurate reflection of true brake life measurements and is most likely just based off of miles driven instead of a true measurement, as advertised. I love this car, but am super disappointed that my brakes are so consistently loud - it’s both embarrassing and worrisome. And to make the dealership aware and just have them reset a sensor for this completely separate concern is honestly obnoxious.

Onstar keeps running and failed. Nothing works on car without it. Its dead after shutting it off. And no safety features work.

Brakes are extremely noisy at low speeds. Dealer advice that this is normal When driving at low speeds brakes squeak extremely loud This is clearly a defect that GM needs to address They keep using the excuse that is the the high quality pads that they are using

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.

Brake pedal went to the floor 1 time when starting vehicle at approximately 400 miles.

Driving down the street after a short trip this morning with no one on the road in front of us the vehicle had an alert like we were about to impact someone and braked pretty hard 2x back to back with the collision alert popping up. The person behind us had to slam on their brakes and BARELY avoid hitting us. There was NOTHING in front of us. This vehicle is dangerous to everyone around us and should be taken off the road.