Heated Oxygen Sensor (HO2S) Replacement Bank 1 Sensor 2

TOOLS REQUIRED
J 39194 Oxygen Sensor Wrench

REMOVAL PROCEDURE
1. Raise and support the vehicle. Refer to Vehicle Lifting.




2. Disconnect the heated oxygen sensor connector from the engine harness connector.




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

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




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

NOTE: Refer to Component Fastener Tightening Notice in Service Precautions.

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.


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




2. Connect the heated oxygen sensor connector to the engine harness connector.
3. Lower the vehicle.