Grand Prix V8-5.3L (2007)
Oxygen Sensor: Service and Repair
Heated Oxygen Sensor Replacement - Bank 1 Sensor 1
Heated Oxygen Sensor Replacement - Bank 1 Sensor 1
Removal Procedure
Notice: Refer to Heated Oxygen and Oxygen Sensor Notice.
1. Remove the ignition coils.
2. Remove the connector position assurance (CPA) retainer (1).
3. Disconnect the bank 1 sensor 1 electrical connector (2).
4. Remove the bank 1 sensor 1 from the exhaust manifold.
Installation Procedure
Important: A special anti-seize compound is used on the HO2S threads. The compound consists of liquid graphite and glass beads. The
graphite tends to burn 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.
