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The thermostat in the 2011 Buick Enclave is positioned in the rear right part of the engine compartment within a black plastic housing attached to the engine block with a rubber coolant hose. Its main function is to regulate the flow of coolant passing through the engine block. Essentially, the thermostat operates using a basic mechanism involving a wax-filled cylinder that responds to temperature changes from the engine, causing a valve to open or close accordingly. This valve adjustment controls the circulation of coolant to maintain proper engine temperature.
The thermostat for the 2011 Buick Enclave can be found near the lower coolant line leading to the radiator.