OEM 2004 Cadillac SRX Oxygen Sensor

2004 Cadillac SRX Oxygen Sensor Parts and Q&A

• Q: How to replace the Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 on 2004 Cadillac SRX?

  A: To access the Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2, lift and support the vehicle by turning off its ignition first, then perform the following process - remove the fuel filler cap and reliefs for the Evaporative Emission Control System (EVAP), disconnect the electrical connectors from the HO2S Bank 1 Sensor 2 using the 10mm box end and 10mm socket, then use a 22mm open-end wrench to loosen the clamp nut at the end of the EVAP harness connected to the Exhaust Gas Recirculation (EGR) valve. Then, take out the bolts Disconnect the HO2S plug and disconnect the HO2S wiring harness from the transmission case. It is much easier to remove the oxygen sensor when the temperature of the engine is more than 48°C (120°F). Next, remove the HO2S. When replacing the new HO2S, ensure that it will have a special anti-seize compound attached to the sensor threads already; In case of using the original sensor, the threads should be coated with an anti-seize compound GM P/N 5613695 or the same thing. Install the HO2S and clamp it to 40 N.m (30 lb ft). Connect the HO2S electrical connector, put the HO2S wiring harness back onto the transmission case, and finally, lower the car.