Loss of Power Brake Assist/FMVSS 135
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."
Dealers will update the EBCM software, free of charge. Owner notification letters are expected to be mailed August 15, 2022. Owners may contact Buick's customer service at 1-800-521-7300.
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