Buick 1994 LeSabre Owner's Manual page 91

Turn Signal and Lane Change Indicator
A green arrow on the
instrument panel will flash
in the direction of the turn
or lane change.
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.
To signal a lane change, just raise or lower the lever
until the green arrow starts to flash. Hold it there until
you complete your lane change. The lever will return by
itself when you release it.
As you signal a turn or a lane change, if the arrows don't
flash but just stay on, 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 green arrows don't go
or1
at all when you
signal a turn, check the fuse (see "Fuses" in the Index)
and .for burned-out bulbs.