The thermostat on a 2009 Chevrolet Aveo hatchback is located
behind the engine, near the top of the engine block. It's usually tucked in a somewhat difficult-to-reach spot, often requiring removal of some components for easier access. You'll likely need to consult a repair manual specific to your vehicle's year and engine (1.6L or other) for precise location and removal instructions. A diagram in the manual will be invaluable.
Without a repair manual, attempting to locate it yourself could be frustrating and time-consuming. The location can vary slightly depending on the specific engine and any aftermarket modifications.
