Chevrolet 2002 Prizm Owner's Manual page 113

The mirror moves so that you can adjust it up and down
or side to side. You can adjust the mirror for day or night
driving. Pull the tab for night driving to reduce glare.
Push the tab for daytime driving.
Outside Manual Adjust Mirrors
The knob for this feature is located on the door panel
to the left of the steering wheel. Use the knob to adjust
the mirror so that you can see a little of the side of
your vehicle when you are sitting in a comfortable
driving position.
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