WARNING: This page is about a different car, the 2003 Pontiac Montana, 2003 Oldsmobile Silhouette, and 2003 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
Turn OFF the ignition. Raise and support the vehicle. Locate HO2S to be removed. See Figure or Figure
. Disconnect the HO2S harness connector. Using Heated Oxygen Sensor Wrench (J-39194-B), remove the HO2S.