Removal (3.5L)
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.
Downstream Heated Oxygen Sensor (HO2S) may also be referred to as HO2S 2. Turn ignition off. HO2S 2 is located behind catalytic converter. Raise and support vehicle. Remove oxygen sensor harness connector heat shield. Disconnect HO2S 2 harness connector. Using HO2S Wrench (J-39194-B), carefully remove HO2S 2 from exhaust pipe.