OnStar Button Assembly Replacement

The OnStar(R) Buttons are an integral part of the rear view mirror assembly. If the button malfunctions, you must replace the rear view mirror assembly. Refer to Rearview Mirror Replacement (UE1) in Heated Glass Element.

"For a description of the RPO Code(s) shown in this article or any of the images therein, refer to the RPO Code List found at Vehicle/Application ID". RPO Codes