GMC Terrain: Automatic Dimming Rearview Mirror - Interior Mirrors - Keys, Doors, and Windows - GMC Terrain Owner's ManualGMC Terrain: Automatic Dimming Rearview Mirror

The vehicle may have an automatic dimming inside rearview mirror. Automatic dimming reduces the glare from the headlamps of the vehicle behind you. The dimming feature comes on and the indicator light comes on each time the vehicle is started.

on or off. : Press to turn automatic dimming on or off.

Vehicles with OnStar® have three additional control buttons located at the bottom of the mirror. See your dealer for more information on the system and how to subscribe to OnStar. See OnStar Overview on page 14‑1.

Manual Rearview Mirror
Hold the inside rearview mirror in the center and move it for a clearer view behind the vehicle. Adjust the mirror to avoid glare from the headlamps behind you. Push the tab forward for daytime us ...

Cleaning the Mirror
Do not spray glass cleaner directly on the mirror. Use a soft towel dampened with water. ...

See also:

Three-Way Calling
To initiate three-way calling, press the button while a call is in progress, and make a second phone call, as described under “Making a Second Call While Current Call is in Progress”. Afte ...

Information on “T” type tires
“T” type tires have some additional information beyond those of “P” type tires; these differences are described below: T145/80D16 is an example of a tire size. Note: The temporary ti ...

Manual Lumbar Support — If Equipped
For models equipped with manual lumbar the support lever is located on the inboard side of the seat. Turn the lever downward to increase and upward to decrease the desired amount of lumbar suppo ...