Reverse Tilt Mirrors; Interior Mirrors; Interior Rearview Mirrors; Manual Rearview Mirror - GMC Sierra Denali 2017 Owner's Manual

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zone. Then, glance over your
shoulder to double check
before moving slowly into the
adjacent lane.

Reverse Tilt Mirrors

If equipped with memory seats, the
passenger and/or driver mirror tilts
to a preselected position when the
vehicle is in R (Reverse). This
allows the curb to be seen when
parallel parking.
The mirror(s) return to the original
position when:
The vehicle is shifted out of
R (Reverse), or remains in
R (Reverse) for about
30 seconds.
The ignition is turned off.
The vehicle is driven in
R (Reverse) above a set speed.
To turn this feature on or off, see
Vehicle Personalization 0 155.

Interior Mirrors

Interior Rearview Mirrors

Adjust the rearview mirror for a clear
view of the area behind your
vehicle.
If equipped with OnStar, the vehicle
may have three control buttons at
the bottom of the mirror. See your
dealer for more information about
OnStar and how to subscribe to it.
See OnStar Overview 0 471.
Do not spray glass cleaner directly
on the mirror. Use a soft towel
dampened with water.

Manual Rearview Mirror

If equipped, push the tab forward for
daytime use and pull it rearward for
nighttime use to avoid glare from
the headlamps from behind.
Keys, Doors, and Windows
Automatic Dimming
Rearview Mirror
The mirror will automatically reduce
the glare of the headlamps from
behind. The dimming feature comes
on each time the vehicle is started.
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Sierra 2017

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