Chevrolet IMPALA 2005 Owner's Manual page 154

Hot Coolant Temperature Warning
Message
United States
This message is displayed when the cooling system
temperature gets hot. A chime will sound
continuously, also.
Check the coolant temperature gage and the coolant
level. See Engine Coolant on page 5-28, Engine Coolant
Temperature Gage on page 3-34 and Engine
Overheating on page 5-31 for further information.
3-42
Low Oil Pressure Message
Canada
This message is displayed in the message center when
the engine oil pressure is low. A chime will sound
continuously, also.
If this occurs, you should have your vehicle serviced
immediately.
United States Canada