Engine Coolant Temperature Sensor: Removal
WARNING: This page is about a different car, the 2003 Cadillac Seville and 2003 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
Turn ignition off. Raise and support the vehicle. Remove the push in retainers securing the front air deflector to the vehicle. Remove the front air deflector. Drain the cooling system to below the Engine Coolant Temperature (ECT) sensor. See Fig 1. Disconnect the ECT sensor electrical connector. Carefully remove the ECT sensor.