WARNING: This page is about a different car, the 2015 Buick Verano. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Mobile Telephone Microphone & Sun Roof Actuator Trim Cover
Courtesy of GENERAL MOTORS COMPANY
Callout
Component Name
1
Sun Roof Actuator Trim Cover
2
Mobile Telephone Microphone Procedure Disconnect electrical connector.