Removal - 1/1 Upstream

Download the full database via torrent (~1.1 TB)

Remove the air cleaner lid and makeup air hose.
Remove the negative battery cable.
Disconnect electrical connector from sensor.
Remove sensor using an oxygen sensor special tool C-4907. See Fig 1.

Fig 1: Upstream & Downstream 02 Sensors

GC0021612

Courtesy of DAIMLERCHRYSLER CORP.

1 - DOWN STREAM O2 SENSOR

2 - UP STREAM O2 SENSOR