2025 Buick Envista

To the Vehicle Safety Complaint Division: I am filing a safety complaint regarding brake service performed on a 2025 Buick Envista (VIN: [XXX]) by Suburban Buick GMC of Troy, 1850 W Maple Rd, Troy, MI 48084, an authorized GM dealership. Safety Issue: The vehicle was brought in on XXX with brake pulsation at 20,689 miles. Suburban performed rotor resurfacing on all four rotors and certified the repair as complete and verified on XXX. On XXX — 13 days after Suburban certified the repair — Moran Buick GMC of Sterling Heights found the rear rotors causing the identical brake pulsation symptom. [XXX]'s service advisor determined the rear rotor was rubbing against another component and stated in his professional opinion that Suburban's prior service caused the condition. The corrective repair was processed as a GM warranty claim. Safety Concern: A certified brake repair on a 21,342-mile vehicle failed within days of service. The failure involved the braking system — a safety-critical component. The original service manager dismissed the customer's safety concern by stating failure would depend on "how you drive." Dealer: Suburban Buick GMC of Troy, Registration Number XXX, operated by Lithia Motors, Inc. (NYSE: LAD) Supporting Documentation: Two authorized GM dealer repair orders documenting the failed repair and corrective service are available upon request. I respectfully request confirmation of receipt of this complaint and assignment of a case or reference number. I am available to provide any additional documentation or information required to support this complaint. The complete documentary record, including both repair orders, the independent inspection findings, and the complete correspondence record with Lithia Motors corporate, is attached. Sincerely, [XXX] Authorized Representative for [XXX] [XXX] [XXX] Attachments: — [XXX] v. Lithia Motors Document Package (Exhibits INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2025 Buick Envista. The contact stated that the check engine warning light was illuminated. While driving at an undisclosed speed and depressing the brake pedal, the vehicle jerked abnormally before coming to a complete stop. The failure also occurred while attempting to accelerate after stopping at a stop light or a stop sign. The were abnormal grinding sounds intermittently coming from the vehicle while driving at various speeds. The infotainment center also overheated and blacked out intermittently. The vehicle was taken to the dealer, who diagnosed that the sensor was moist after the vehicle had been on the lot for a while. The vehicle was not repaired. The failures persisted. The manufacturer was not informed of the failure. The failure mileage was approximately 700. The VIN was not available.

ON [XXX], (SUNDAY) AFTER DRIVING TO AN EAST LANSING, MI RESTAURANT & SPENDING 1-1/2 HOURS EATING BREAKFAST, I TURNED MY CAR ON AT ABOUT [XXX], AND RECEIVED AN ERROR MESSAGE ON THE DASHBOARD THAT THE POWER STEERING WAS NOT FUNCTIONING. I TRIED BACKING UP, THEN DRIVING FORWARD 3-4 TIMES & THE ISSUE WAS CONFIRMED. I ALSO TURNED THE CAR OFF & ON SEVERAL TIMES WITH THE SAME ERROR MESSAGE APPEARING. I CALLED ON STAR AND THE DIAGNOSTIC TESTS WERE ALL NEGATIVE FOR ISSUES. MY CALL TO ON STAR GOT DISCONNECTED. I TURNED MY CAR OFF. WHEN I TURNED IT BACK ON, THE POWER STEERING WAS WORKING. ON STAR CALLED ME BACK & I REPORTED THAT THE POWER STEERING WAS NOW APPARENTLY WORKING. I THEN DROVE, VERY APPREHENSIVELY, OVER 100 MILES TO MY HOME IN GRAND HAVEN, MI WITH NO PROBLEMS. THIS COULD HAVE PROVED DEADLY IF MY POWER STEERING HAD FAILED DURING THE DRIVE. ON [XXX], (SUNDAY), AT 3:22PM EST, I RECEIVED , IN MY EMAIL, MY SEPTEMBER 'DIAGNOSTIC' REPORT THAT MY ANTILOCK BRAKING SYSTEM HAS AN ALERT THIS MONTH WITH REQUIRES IMMEDIATE ATTENTION. AS OF TODAY, MONDAY, SEPTEMBER 15, I HAVE NOT CONTACTED THE DEALER YET. THIS IS MY 3RD WARRANTY ISSUE SO FAR, MAKING ME EXTREMELY UNSATISFIED (NOT YOUR PROBLEM, I KNOW). MY BACKUP CAMERA CEASED FUNCTIONING & HAD TO BE REPLACED. MY DRIVER SIDE MIRROR GLASS WAS NEVER SEATED PROPERLY AND THE ENTIRE MIRROR IS IN THE PROCESS OF BEING REPLACED. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Vehicle: 2025 Buick Envista Incident Date: July 19, 2025 I purchased a brand-new 2025 Buick Envista in June, 2025 and owned it for just over a month when the brakes suddenly and completely failed while I was driving on the highway. As I exited the ramp and attempted to slow down, the brake pedal went soft and unresponsive. I had no ability to stop my vehicle, and in a moment of panic, I swerved into a curb to avoid hitting other cars or pedestrians. This caused damage to my rim and tire, but thankfully I avoided a major crash or injury. I had the vehicle towed to the dealership, where they diagnosed a master cylinder failure. The car is currently being repaired under warranty, but I no longer feel safe driving it. I suffer from anxiety and have been experiencing panic attacks and nightmares since the incident. I am deeply afraid of getting back into a car that nearly killed me. This is a brand-new vehicle and a brake failure of this magnitude should never happen — let alone within the first month of ownership. GM/Buick has offered to repair the car but not replace it, and I was informed I do not qualify for lemon law because this has only occurred once. That doesn’t change the fact that I experienced a catastrophic and life-threatening failure that could have resulted in serious injury or death. I am filing this report because I believe this is a manufacturing defect that poses a danger to others. A single failure of this kind is enough to destroy trust in the safety of a vehicle. If this happened to someone else, the outcome could be tragic. Please investigate this issue before someone loses their life.