WARNING: This page is about a different car, the 2002 Pontiac Grand Am, 2002 Oldsmobile Alero, and 2002 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
Turn ignition off. Drain the coolant system to below the Engine Coolant Temperature (ECT) sensor. See Figure
or Figure
. Disconnect the ECT sensor electrical connector. Carefully remove the ECT sensor.