2020 Buick Regal

Defect. General Motors, LLC (GM) is recalling certain 2018-2020 Buick Regal vehicles. In the event of a vacuum-power brake assist failure, a software error in the electronic brake control module (EBCM) may result in a loss of power brake assist. As such, these vehicles fail to conform to Federal Motor Vehicle Safety Standard No. 135, "Light vehicle brake systems."

Risk. A loss of power brake assist can extend the distance required to stop the vehicle, increasing the risk of a crash.

Remedy. Dealers will update the EBCM software, free of charge. Interim owner notification letters advising owners of the safety risk were mailed on August 19, 2022. Owner notification letters were mailed September 16, 2022. Owners may contact Buick's customer service at 1-800-521-7300.

Proximity door unlock system rarely works goes in and out even with key fob in pocket and within Proximity. I've reported the problem to buick/Chevrolet many times, changed fob batteries and etc with no fix

The contact owns a 2020 Buick Regal GS equipped with Continental ProContact TX Tires, Tire Size: 245/40/R19, DOT Number: 6Y66WBR71819. The contact stated while driving approximately 70 MPH, the TPMS warning light indicated that the rear driver’s side tire air pressure was low. The tire lost air pressure and became flat. Also, later the front passenger’s side tire developed bubbles and had to be replaced. Within the first 200 miles of driving the vehicle, a dealer employee experienced a blowout of the front passenger’s side tire. The contact stated that the vehicle was equipped with the tires when it was purchased new. The contact stated that three of the four tires had experienced a failure. The contact was informed that the tire size was not included in the NHTSA Campaign Number: 21T001000 (Tires). The failure mileage was 200.