Removal Procedure
Notice: Handle the oxygen sensors carefully in order to prevent damage to the component. Keep the electrical connector and the exhaust inlet end free of contaminants. Do not use cleaning solvents on the sensor. Do not drop or mishandle the sensor.
Important:
• Bank 1 on the LC3 engine is the right side of the engine while sitting in the driver seat. • Sensor 1 is the sensor closest to the engine, or farthest forward towards the front of vehicle. • A special anti-seize compound is used on the oxygen sensor threads. New service sensors should already have the compound applied to the threads. Coat the threads of a reused sensor with anti-seize compound P/N 5613695 or equivalent.
- Remove the engine sight shield. Refer to Intake Manifold Sight Shield Replacement .
- Remove the front air inlet housing panel. Refer to Air Inlet Housing Front Panel Replacement .
- Disconnect the oxygen sensor electrical connector (1) from the engine wiring harness connector at the rear of the right head.
- Remove the wire harness from the bracket.
- Note the wire routing and attachment points for reassembly.
- Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
- Remove oxygen sensor from the exhaust manifold.
Installation Procedure
- Install the oxygen sensor in the exhaust manifold.
- Lower the vehicle.
- Route and attach the wiring as noted during disassembly.
- Connect the oxygen sensor electrical connector (1) to the engine wiring harness connector at the rear of the right head.
- Install the wire harness to the bracket.
- Install the front air inlet housing panel. Refer to Air Inlet Housing Front Panel Replacement .
- Install the engine sight shield. Refer to Intake Manifold Sight Shield Replacement .
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Tighten
Tighten the heated oxygen sensor (HO2S) to 42 N·m (31 lb ft).
