2005 Buick LeSabre Owner's Manual - Page 268

If there is still no sign of steam, you can idle the engine for three minutes while you are parked. If you still have the warning, turn off the engine and get everyone out of the vehicle until it cools down. You may decide not to lift the hood but to get service help right away. {CAUTION: An electric engine cooling fan under the hood can start up even when the engine is not running and can injure you. Keep hands, clothing and tools away from any underhood electric fan. If the coolant inside the coolant recovery tank is boiling, do not do anything else until it cools down. The vehicle should be parked on a level surface. 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 is not, 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. Cooling System When you decide it is safe to lift the hood, here is what you will see: A. Coolant Recovery Tank B. Radiator Pressure Cap C. Electric Engine Cooling Fans 5-28