How do you replace thermostat on 1992 buick lesabre?

Answer 1

Open the Century's hood. Follow the upper radiator hose from the engine to the coolant outlet housing, on the upper portion of the engine's side.Remove the bolts holding the coolant outlet housing to the engine, using a socket wrench and an 8 mm socket.Pull the coolant outlet housing off the engine, by hand. Shove a rag into the outlet housing to prevent debris from entering the engine.Clean the sealing surface on the engine and housing, using a gasket scraper.Remove the rags from the engine and coolant outlet housing. Start the engine and let it run until the temperature gauge reaches operating temperature.