Chevrolet 2002 Impala Owner's Manual page 166

Low Fuel
United States
This message is displayed when your vehicle is low on
fuel. Four chimes will also sound.
Refer to the fuel gage for a better indication of the
amount of fuel remaining in the fuel tank.
2-100
Low Washer Fluid
Canada
This message is displayed when the vehicle is low on
windshield washer fluid.
The message is only displayed for 60 seconds at the
start of each ignition cycle. For more information see,
"Windshield Washer Fluid" in the Index.
When the ignition is turned off, this message will be
displayed again for three seconds to remind you that
your washer fluid is low. Be sure to refill the washer
fluid tank right away.
United States Canada