Malibu L4-2.4L (2010)
Exhaust Manifold: Service and Repair
Exhaust Manifold Replacement - Left Side
Exhaust Manifold Replacement - Left Side
Special Tools
J 39194-B Heated Oxygen Sensor Wrench
Removal Procedure
Caution: 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.
Caution: The use of excessive force may damage the threads in the exhaust manifold/pipe.
Note: 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 heated oxygen sensor (HO2S).
Note: The HO2S may be difficult to remove when the engine temperature is less than 48°C (120°F)
1. Remove the air intake duct. Refer to Air Cleaner Inlet Duct Replacement (See: Engine/Tune-up and Engine Performance Checks/Air Cleaner
Housing/Air Cleaner Fresh Air Duct/Hose/Service and Repair/Air Cleaner Inlet Duct Replacement).
2. Remove the connector position assurance (CPA) retainer (5).
3. Disconnect the engine wiring harness electrical connector (4) from the HO2S electrical connector (3).
4. Remove the HO2S electrical connector rosebud clip from the oil level indicator tube tab.
