2021 GMC Sierra 1500 Owners Manual - Interior Mirrors

Interior Mirrors

Adjust the rearview mirror for a clear view of the area behind your vehicle.

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

If equipped, push the tab forward for daytime use and pull it rearward for nighttime use to avoid glare from the headlamps from behind.

If equipped, the mirror will automatically reduce the glare of the headlamps from behind. The dimming feature comes on each time the vehicle is started.

If equipped, this automatic dimming mirror provides a wide angle camera view of the area behind the vehicle.

Pull the tab to turn on the display. Push the tab to turn it off. When off the mirror is automatic dimming. Adjust the mirror for a clear view of the area behind the vehicle while the display is off.

Press V to scroll through the adjustment options.

Press t and u to adjust the settings using the indicators on the mirror. The indicators will remain visible for five seconds after the last button activation, and the settings will remain saved.

The adjustment options are:

Brightness

Zoom

Tilt

Troubleshooting

See your dealer for service if a blue screen and 3 are displayed in the mirror, and the display shuts off. Also, push the tab as indicated to return to the automatic dimming mode.

The Rear Camera Mirror may not work properly or display a clear image if:

There is glare from the sun or headlamps. This may obstruct objects from view.

If needed, push the tab to turn off the display.

Dirt, snow, or other debris blocks the camera lens. Clean the lens with a soft damp cloth.

The camera’s mounting on the vehicle has been damaged, and/or the position or the mounting angle of the camera has changed.