OEM 2007 Cadillac Escalade EXT Oxygen Sensor

2007 Cadillac Escalade EXT Oxygen Sensor Parts and Q&A

• Q: How to replace the Heated Oxygen Sensor (HO2S) for Bank 2 Sensor 1 in the 1500 Series on 2007 Cadillac Escalade EXT?

  A: Begin Heated Oxygen Sensor (HO2S) for Bank 2 Sensor 1 replacement in 1500 Series vehicles by raising the vehicle and supporting it for work. Detach the HO2S electrical connector from its position with the engine wiring harness electrical connector . Also remove the connector position assurance (CPA) retainer. The procedure continues with removal of the HO2S clip from the engine wiring harness followed by sensor extraction. Protect sensor connectors by avoiding any harm to the pigtail since damage may result in performance issues. The threads of new or service-replaced sensors should receive application of anti-seize compound GM P/N 12377953 or equivalent material to assist future uninstalls. Use anti-seize compound GM P/N 12377953 or equivalent on the HO2S threads before installation and torque it to 42 N.m (31 lb ft). Return the HO2S electrical connector to connect with the engine wiring harness electrical connector before fastening the CPA retainer and attaching the HO2S clip to the harnesses before lowering the vehicle.