Impala V8-5.3L (2008)
Oxygen Sensor: Service and Repair
Heated Oxygen Sensor Replacement - Bank 1 Sensor 2
Heated Oxygen Sensor Replacement - Bank 1 Sensor 2
Removal Procedure
Notice: Refer to Heated Oxygen and Oxygen Sensor Notice.
1. Raise and support the vehicle. Refer to Vehicle Lifting.
2. Remove the connector position assurance (CPA) retainer.
3. Disconnect the bank 2 sensor 2 electrical connector.
4. Remove the bank 2 sensor 2 from the catalytic converter.
Installation Procedure
Important: A special anti-seize compound is use on the heated oxygen sensor (HO2S) threads. The compound consists of liquid graphite and
glass beads. The graphite tends to burns away, but the glass beads remain, making the sensor easier to remove. New or service replacement
sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor
is to be reinstalled, the threads must have anti-seize compound applied before reinstallation.