Switches of the Inside Rearview Mirror with the Automatic Day/Night Feature (w/ UE1)

WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

The inside rearview mirror has four switches that perform the following functions:

The on/off switch at the left side of the mirror is used to enable or disable the automatic Day/Night feature. With the ignition in the ON position, depress and hold the on/off switch for 3 seconds to enable the automatic Day/Night feature of the mirror. A green indicator will illuminate on the mirror when the automatic Day/Night feature is enabled. To disable the automatic Day/Night feature of the mirror, depress and hold the on/off switch for 3 seconds.
The three switches on the right side of the mirror are for OnStar® operation. For more information, refer to ONSTAR DESCRIPTION AND OPERATION in Cellular Communications.