GMC Sierra Quiz
Keys, Doors, and Windows

Automatic Dimming Rearview Mirror

In this manual: Keys, Doors, and Windows
Introduction — 6In Brief — 46Seats and Restraints — 48Storage — 7Instruments and Controls — 75Lighting — 22Infotainment System — 22Climate Controls — 7Driving and Operating — 77Vehicle Care — 79Service and Maintenance — 26Technical Data — 8Customer Information — 25OnStar — 25Keys, Doors, and Windows — 38
~1min read

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 illuminates each time the ignition is turned to start.

GMS Sierra: Automatic Dimming Rearview Mirror. The vehicle may also have a Rear Vision Camera (RVC). See Rear Vision Camera (RVC) on page 9‑68 for more information. (On/Off): Press to turn the dimming feature on or off.

Test yourself

A quick GMC Sierra quiz: every answer comes with an explanation and a link to the manual page.