Chevrolet 1999 S10 Pickup Owner's Manual page 103

Mirrors
Inside Day/Night Rearview Mirror
Pull the tab under the mirror toward you to reduce glare
from headlamps behind you after dark. Push the tab
away from you for normal daytime operation.
Outside Manual Adjust Mirror
Adjust your outside mirrors so you can just see the side
of your vehicle.
You can fold them before entering a car wash. Pull the
mirrors in toward the vehicle. Push the mirrors back out
when finished.
Power Remote Control Mirror
Move the upper control to the left or right to choose the
mirror, then press the arrows on the control pad to adjust
the mirror.
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The control is located on the
driver's door armrest.
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