Component
SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM
Manufacturer
General Motors, LLC
What Happened
The vacuum power assist system in your Regal helps you control your brakes. In 2018-2020 models, a software glitch could cause this system to fail.
Risk if Unfixed
If the power brake assist fails, you'll need to press the brake pedal much harder to stop the vehicle. This could increase the distance you need to stop, making a crash more likely, especially on steep hills or when driving downhill.
Free Fix
Your Buick dealer will update the software controlling your brakes, ensuring it works properly. This repair is free of charge, and you should schedule it as soon as you get the recall notice.
Show original NHTSA language
Original — What Happened
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."
Original — Risk if Unfixed
A loss of power brake assist can extend the distance required to stop the vehicle, increasing the risk of a crash.
Original — 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.
View full recall details →
Repairs are free at any authorized dealer. Find a dealer →