Where is the thermostat for a 2004 Buick Century 2004?

The thermostat for a 2004 Buick Century is located in the engine compartment, specifically on the engine's intake manifold. To access it, you'll need to remove the upper radiator hose that connects to the thermostat housing. The thermostat itself is housed within the thermostat housing, which is usually secured by a couple of bolts. Ensure the engine is cool before attempting to access or replace the thermostat to avoid burns or injury.