The lower radiator hose on a 1999 Cadillac Seville connects the lower part of the radiator to the engine's water pump. It is located at the bottom of the radiator, typically on the driver's side, and runs to the engine block. To access it, you may need to lift the vehicle and remove any covers or components obstructing the hose. Always ensure the engine is cool before attempting to work on the cooling system.
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