Lucerne V6-3.8L (2007)
Oxygen Sensor: Service and Repair
Heated Oxygen Sensor 1 Replacement
Heated Oxygen Sensor 1 Replacement
Tools Required
J 39194 Oxygen Sensor Wrench
Removal Procedure
Notice: The Heated Oxygen Sensor (HO2S) and the Oxygen Sensor use a permanently attached pigtail and connector. Do not remove this pigtail from
the Heated Oxygen Sensor. Damage or the removal of the pigtail or the connector could affect the proper operation of the sensor.
Take care when handling the HO2S and the O2S. Keep the in-line electrical connector and the louvered end free of grease, dirt, or other contaminants.
Also avoid using cleaning solvents of any type. Do not drop the HO2S or the O2S. Do not roughly handle the HO2S or the O2S.
1. Remove the intake manifold cover.
2. Disconnect the engine harness electrical connector from the HO2S pigtail.
3. Remove the HO2S pigtail clip from the sight shield bracket.
4. Raise and support the vehicle. Refer to Vehicle Lifting.
