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Home >> Cadillac >> 2007 >> CTS V6-3.6L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Oxygen Sensor >> Service and Repair >> Heated Oxygen Sensor Replacement - Bank 1 Sensor 1
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Heated Oxygen Sensor Replacement - Bank 1 Sensor 1



Heated Oxygen Sensor Replacement - Bank 1 Sensor 1

Removal Procedure




1. Turn the ignition OFF.
2. Disconnect the heated oxygen sensor (HO2S) electrical connector.
3. Remove the HO2S electrical connector from the wiring harness bracket.
4. Raise and support the vehicle. Refer to Vehicle Lifting.

Notice: Refer to Oxygen Sensor Notice.

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




5. Remove the HO2S from the catalytic converter.

Installation Procedure






Notice: Refer to Component Fastener Tightening Notice.

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 to the catalytic converter.

Tighten the HO2S to 40 N.m (30 lb ft).

2. Lower the vehicle.




3. Install the HO2S electrical connector to the wiring harness bracket.
4. Connect the HO2S electrical connector.

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