Chevrolet 2003 Impala Owner's Manual page 84

Window Lock Out
The driver's window controls also include a lock out
switch. Press the WINDOW LOCK switch to the right to
stop front and rear passengers from using their
window switches. The driver can still control all the
windows with the lock on. Press the left side of
the WINDOW LOCK button to return to normal window
operation.
Sun Visors
To block out glare, you can swing down the visors. You
can also move them from side to side. The visors
also have extenders that you can pull out for added
coverage.
Visor Vanity Mirrors
Open the cover on the top of the sun visor to expose
the vanity mirror.
If your vehicle has the lighted vanity mirrors, the lamps
come on when you open the cover.
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