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

Service Brakes, Hydraulic — Power Assist — Electric — Control Module — Software
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."

Actions

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.

Documents (7)

• Manufacturer Notices(to Dealers,etc) - Dealer Message re Stop Delivery Order for Upcoming Noncompliance N222370090 Increased Stopping Distance During Certain Brake Vacuum Loss Events
• Recall 573 Report
• Recall Acknowledgement
• Recall 573 Report
• Miscellaneous Document - Frequently Asked Questions (FAQs) for NonCompliance Recall N222370090 Increased Stopping Distance During Certain Brake Vacuum Loss Events
• Recall 573 Report
• Manufacturer Notices(to Dealers,etc) - Dealer Message re N222370090 - Noncompliance Recall Increased Stopping Distance During Certain Brake Vacuum Loss Events Application for Used Vehicle Working Capital Assistance Program (WCAP)

Click a tab for more information.