Chevrolet 2010 Impala Owner's Manual page 16

Mirror Adjustment
Exterior Mirrors
Press the left or right side of the selector located
beneath the control pad to adjust the driver or passenger
mirror. Then press the control pad to move the mirror
to the desired direction.
1-10
Controls for the outside
power mirrors are located
on the driver door armrest.
Interior Mirror
Vehicles with a manual rearview mirror can be adjusted
by holding the mirror in the center to move it for a
clearer view behind the vehicle. Adjust the mirror to
avoid glare from the headlamps behind. Pull the lever,
located at the bottom of the mirror for nighttime use.
Return the lever to its original position for the day
position.
Vehicles with an automatic dimming rearview mirror will
automatically adjust to reduce the glare of lights from
behind the vehicle. See Automatic Dimming Rearview
Mirror on page 3-33.