WARNING: This page is about a different car, the 2020 Buick Regal TourX, 2020 Buick Regal, 2019 Buick Regal TourX, and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
Courtesy of GENERAL MOTORS COMPANY
Callout
Component Name
1
Roof Console Procedure
Use a flat bladed plastic tool to remove.
Disconnect the electrical connector.
NOTE:
When installing the roof console do not squeeze or kink any wiring harness.