Driver Information Center (DIC) Description and Operation: Language
WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
The driver information center is capable of displaying in different languages, corresponding to the radio language settings. The instrument cluster receives a serial data message with language information from the radio. This message is only sent one time, after a new language is selected. To set the language, see the owners manual.