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)

Since purchasing this unit on 06/14/2025, I have taken this car in for many issues, including the digital dashboard going out multiple times and the AC unit stopping working. I have attached the service history ticket for your records. This unit is deemed to fall apart here shortly. Not even a year old, and the AC has already gone out 3-4 times. Most important is the dashboard that shows speed and other important information I will use to drive.

The contact owns a 2025 Buick Envista. The contact stated that while driving during heavy rain, the windshield wiper fractured in half, resulting in poor visibility while driving. The vehicle was taken to an independent mechanic, but the part to repair the vehicle was unavailable. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 15,266.

See attached document for complaint.

Window will not go back up. Also when the windows are Locked ( Light indicator on) THEY STILL GO DOWN. My driver window was half way down and would not go back up. The Fuse was checked and Did not need to be replaced. Approximately 6 hours later window went back up.. WEIRD