Where is the thermostat in a 2002 GMC savanna?

In a 2002 GMC Savanna, the thermostat is located on the engine, typically near the front where the upper radiator hose connects to the engine block. To access it, you may need to remove the upper radiator hose and possibly the thermostat housing, which is usually held in place by bolts. It's important to ensure the engine is cool before attempting to check or replace the thermostat.