For vehicles with heated mirrors: The heated outside mirrors turn on when the rear window defogger is on and help to clear fog or frost from the surface of the mirrors.
: This button is on the climate
control panel.
See "Rear Window Defogger" under Dual Automatic Climate Control System.
Automatic Dimming Mirror
The vehicle has an automatic dimming outside mirror on the driver side. The mirror will adjust for the glare of headlamps behind you.
Folding Mirrors
Reverse Tilt Mirrors#13-00-89-003: Vehicle Software Enhancements - (Mar 27, 2013)
Subject:Vehicle Software EnhancementsModels: 2014 and Prior GM Passenger Cars and Light Duty Trucks The new technology systems on today’s vehicles may have software enhancements availableto add additional functionality after the vehicle is produced. To meet customer expectations,GM may make th ...