Where is the thermostat located on a 2000 Chevy Silverado?

The thermostat on a 2000 Chevy Silverado is located on the engine, typically under the intake manifold. It's not easily accessible and requires removing parts of the intake system to replace it. You'll likely need a repair manual specific to your truck's engine (e.g., 4.3L, 4.8L, 5.3L, 5.7L, 6.0L, or 6.5L diesel) to pinpoint the exact location and understand the necessary steps for removal and replacement.