WARNING: This page is about a different car, the 2014 Chevrolet Cruze. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Mobile Telephone Microphone
Courtesy of GENERAL MOTORS COMPANY
Mobile Telephone Microphone Replacement
Callout
Component Name
1
Dome Lamp Bezel
2
Mobile Telephone Microphone Procedure Disconnect electrical connector.