Engine Coolant Temperature Sensor: Removal
WARNING: This page is about a different car, the 2002 Oldsmobile Intrigue and 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
Turn ignition off. Drain the coolant system below the level of the Engine Coolant Temperature (ECT) sensor. See Figure. Disconnect the ECT sensor electrical connector. Carefully remove the ECT sensor.