Heated Oxygen Sensor (HO2S) Replacement Bank 2 Sensor 2
HEATED OXYGEN SENSOR (HO2S) REPLACEMENT BANK 2 SENSOR 2REMOVAL PROCEDURE
1. Turn the ignition OFF.
2. Raise and support the vehicle. Refer to Vehicle Lifting.
3. Disconnect the heated oxygen sensor (HO2S) electrical connector (bank 1 shown, bank 2 similar).
4. Remove the HO2S wiring harness from the transmission case.
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).
5. Remove the HO2S.
INSTALLATION PROCEDURE
NOTE: Refer to Component Fastener Tightening Notice in Service Precautions.
IMPORTANT: New oxygen sensors should have a special anti-seize compound already applied to the sensor threads. If you are installing the original sensor, apply anti-seize compound GM P/N 5613695 or equivalent to the sensor threads.
1. Install the HO2S.
Tighten
Tighten the HO2S to 40 N.m (30 lb ft).
2. Connect the HO2S electrical connector (bank 1 shown, bank 2 similar).
3. Install the HO2S wiring harness to the transmission case.
4. Lower the vehicle.