Removal - Downstream 2/1, 2/2

Raise and support vehicle.
Disconnect heated oxygen sensor electrical connector (Fig 1 ) or (Fig 2 ).

Fig 1: Identifying Right Rear Heated Oxygen Sensor
Courtesy of DAIMLERCHRYSLER CORP.

Fig 2: Locating Left Rear Heated Oxygen Sensor
Courtesy of DAIMLERCHRYSLER CORP.
Remove sensor using an oxygen sensor crow foot wrench such as Snap-On tool YA8875 or equivalent.