J 39194 Oxygen Sensor Wrench

1. Disconnect the heated oxygen sensor connector (1) from the engine harness connector (2).
2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

Notice: Refer to Oxygen Sensor Notice in the Preface section.





Important: Removal of the oxygen sensor is easier when the engine temperature is above 48°C (120°F).

3. Remove the heated oxygen sensor using the J 39194 .

Notice: Refer to Component Fastener Tightening Notice in the Preface section.





Important: A special anti-seize compound is used on the oxygen sensor threads. The new service sensors should have the compound already applied to the threads. Coat the threads of a reused sensor with anti-seize compound GM P/N 5613695 or the equivalent.

1. Install the heated oxygen sensor using the J 39194 .

Tighten
Tighten the heated oxygen sensor to 40 N·m (30 lb ft)

2. Lower the vehicle.



3. Connect the heated oxygen sensor connector (1) to the engine harness connector (2).