Your vehicle may have this feature.

The driver's outside mirror will adjust for the glare of the headlamps behind you. See Automatic Dimming Rearview Mirror with OnStar®, Compass and Temperature Display .

Your vehicle's mirrors will also be capable of performing the curb view assist mirror function. This feature will cause the passenger's and/or driver's mirror to tilt to a preselected position when the vehicle is in REVERSE (R). This feature may be useful in allowing you to view the curb when you are parallel parking.

When the vehicle is shifted out of REVERSE (R) and a short delay has occurred, the passenger's and/or driver's mirror will return to its original position.

To change the preselected tilt position, adjust the mirrors to the desired position while the vehicle is in REVERSE (R). When the vehicle is shifted out of REVERSE (R), this new position is saved in memory as the tilt position.

This feature can be enabled/disabled through the Driver Information Center. See DIC Vehicle Customization for more information.