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Buick Regal may lose backup power brake assist

NHTSA campaign 22V465000 · Reported 2022-06-30 · General Motors, LLC

medium How serious is it? About this label

This only matters if the main power brake assist fails first, but a longer stopping distance raises crash risk, so get the free software update scheduled.

What's wrong, in plain English

Your brakes use a power assist system that makes the pedal easy to press. If that assist system fails, a software error in the brake control computer can keep the backup assist from kicking in. Without it, the pedal gets much harder to push and the car takes a longer distance to stop. Because of this, the vehicles do not meet the federal brake safety standard. Dealers will update the brake module software at no charge.

What you should do

1. Enter your VIN at nhtsa.gov/recalls to confirm your Regal is included.
2. Call your Buick dealer or Buick customer service at 1-800-521-7300 to book the appointment.
3. Have the brake control module software updated — the update is free.

Affected vehicles (3)

2018 Buick Regal
2019 Buick Regal
2020 Buick Regal

Who to contact

Buick — official Buick recall lookup

Customer service: 1-800-521-7300

Any franchised dealer for the brand can do the repair. Phone numbers are taken from manufacturer sites and recent NHTSA notices; if one has changed, the number in your own recall letter is the one to use.

Official notice

Component: SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM
Summary: 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."
Safety 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.

Verify your specific vehicle by VIN at nhtsa.gov. Recall repairs are free of charge by law.