CTS V6-3.2L VIN N (2003)
Oxygen Sensor: Service and Repair
Heated Oxygen Sensor (HO2S) Replacement Bank 1 Sensor 1
TOOLS REQUIRED
J 39194 Oxygen Sensor Wrench
REMOVAL PROCEDURE
1. Disconnect the heated oxygen sensor connector (2) from the engine harness connector (1).
2. Raise and support the vehicle. Refer to Vehicle Lifting.
3. Remove the heated oxygen sensor using the J39194.
NOTE: Refer to Oxygen Sensor Notice in Service Precautions.
IMPORTANT: Removal of the oxygen sensor is easier when the engine temperature is above 48°C (120°F).
INSTALLATION PROCEDURE
