Removal Procedure

WARNING: This page is about a different car, the 2007 Cadillac XLR. However, it is still accessible from the selected car via links, so may be relevant.

Remove the windshield garnish molding. Refer to Windshield Garnish Molding Replacement .

Fig 1: View Of OnStar(R) Microphone, Wire Harness & Retainers

Courtesy of GENERAL MOTORS CORP.

Using a small flat-bladed tool, release the OnStar® microphone from the trim bezel retainers.
Remove the OnStar® microphone wire harness from the windshield header.
Disconnect the wire harness lead.