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The Chevy Cruze has an engine coolant temperature sensor located in the coolant flange next to the cylinder head. This sensor, also called a coolant temperature sensor (CTS), ECT sensor, or ECTS, is responsible for measuring the temperature of the coolant/antifreeze mixture in the cooling system. It helps monitor how much heat the engine is generating and communicates with the vehicle's ECU to ensure that the engine is operating at the ideal temperature. Over time, coolant temperature sensors may experience issues, potentially causing problems such as overheating and decreased engine performance.
The temperature sensor for the engine coolant in a Chevy Cruze can be found in the coolant flange situated to the left of the cylinder head.