See also:

Interior Mirror
The automatic dimming rearview mirror reduces the glare from other vehicle headlamps. Each time the vehicle is started, the dimming feature comes on. See Automatic Dimming Rearview Mirror on page 2&# ...

Rear Vision Camera (RVC)
The vehicle may have a Rear Vision Camera (RVC) system. Read this entire section before using it. The RVC can assist the driver when backing up by displaying a view of the area behind the vehicle ...

Reporting Safety Defects to General Motors
In addition to notifying NHTSA (or Transport Canada) in a situation like this, please notify General Motors. Call 1-800-GMC-8782 (1-800-462-8782), or write: GMC Customer Assistance Center P.O. Box ...