2003 Buick LeSabre Owner's Manual - Page 282

The coolant level should be at or above the FULL COLD mark when the engine is cold. The coolant level should be at the FULL HOT mark under normal operating conditions. If it isn't, you may have a leak at the pressure cap or in the radiator hoses, heater hoses, radiator, water pump or somewhere else in the cooling system. I If there seems to be no leak, with the engine on, check to see if the electric engine cooling fans are running. If the engine is overheating, both fans should be running. If they aren't, your vehicle needs service. Notice: Engine damage from running your engine without coolant isn't covered by your warranty. Notice: When adding coolant, it is important that you use onlyDEX-COOL@(silicate-free) coolant. If coolant other than DEX-COOL is added to the system, premature engine, heater core or radiator corrosion may result. In the engine addition, coolant will require change sooner at 30,000miles (50 000 km) or 24 months, whichever occurs first. Damage caused by the use of coolant other than DEX-COOL@ not covered by your new vehicle is warranty. {eater and radiator hoses, and other engine parts, can be very hot. Don't touch them. If you do, you canbe burned. Don't run the engine if there leak.If you run is a the engine, it could lose all coolant. That could cause an engine fire, and you could be burned. Get any leak fixed before you drive the vehicle. 5-31