Malibu V6-3.9L (2007)
Catalytic Converter: Service and Repair
Catalytic Converter Replacement - Left Side (LZ9)
Catalytic Converter Replacement - Left Side (LZ9)
Tools Required
J 39194-B Heated Oxygen Sensor Wrench
Removal Procedure
Notice: The oxygen sensor uses a permanently attached pigtail and connector. Do not remove the pigtail from the oxygen sensor. Damage to or removal
of the pigtail connector could affect proper operation of the oxygen sensor.
Notice: The use of excessive force may damage the threads in the exhaust manifold/pipe.
Important: The in-line connector and louvered end must be kept clear of grease, dirt or other contaminants. Avoid using cleaning solvents of
any type. DO NOT drop or roughly handle the HO2S.
Important: The HO2S may be difficult to remove when the engine temperature is less than 48°C (120°F)
1. Remove the air cleaner assembly.
2. Remove the connector position assurance (CPA) retainer (5).
3. Disconnect the heated oxygen sensor (HO2S) electrical connector (4).
4. Remove the HO2S clip (3) from the oil level indicator tube bracket.
