Where is the temp sending unit on a 2000 Cadillac Eldorado etc?

On a 2000 Cadillac Eldorado, the temperature sending unit is located on the engine block, typically near the thermostat housing. It can usually be found on the driver's side, towards the back of the engine. To access it, you may need to remove some components or use a socket or wrench to unscrew it. Always ensure the engine is cool before attempting any work on the cooling system.