GMC SIERRA 2020 Owner's Manual page 47

46 Keys, Doors, and Windows
Tilt
Warning
The Rear Camera Mirror (RCM)
has a limited view. Portions of the
road, vehicles, and other objects
may not be seen. Do not drive or
park the vehicle using only this
camera. Objects may appear
closer than they are. Check the
outside mirrors or glance over
your shoulder when making lane
changes or merging. Failure to
use proper care may result in
injury, death, or vehicle damage.
Troubleshooting
See your dealer for service if a blue
screen and 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.