Chevrolet 2003 Impala Owner's Manual page 131

Turn and Lane-Change Indicator
The turn signal has two upward (for right) and two
downward (for left) positions. These positions allow you
to signal a turn or a lane change.
To signal a turn, move the lever all the way up or down.
When the turn is finished, the lever will return
automatically.
I
An arrow on the instrument
panel cluster will flash in
the direction of the
turn or lane change.
To signal a lane change, just raise or lower the lever
until the arrow starts to flash. Hold it there until you
complete your lane change. The lever will return by itself
when you release it.
If the arrow flashes faster than normal as you signal a
turn or a lane change, a signal bulb may be burned
out and other drivers won't see your turn signal.
If a bulb is burned out, replace it to help avoid an
accident. If the arrows don't go on at all when you signal
a turn, check for burned-out bulbs and then check the
fuse, see Fuses and Circuit Breakers on page 5-93.
3-8
Turn Signal On Chime
If you leave either one of your turn signals on and drive
more than 3/4 mile (1.2 km), a chime will sound to
alert you.
Headlamp High/Low-Beam Changer
To change your headlamps from low beams to
high beams, or high to low, pull the multifunction lever
all the way toward you. Then release it.
When the high beams are
on, this light on the
instrument panel cluster
also will be on.
This light works only when the ignition key is in the ON
position, and your fog lamps (if equipped) will not be
illuminated when your high beams are on.