The thermostat on a 2001 Chevrolet Impala is located on the engine, typically
at the rear of the engine, near the firewall, on the passenger side. However, the exact location can vary slightly depending on the specific engine (3.4L V6, 3.8L V6, or 5.7L V8). You'll need to consult a repair manual specific to your Impala's engine for a precise diagram.
Accessing it often requires removing some components to get a clear view and reach. It's usually found near the lower radiator hose connection.
