Sierra 1500 2WD V8-5.3L Hybrid (2004)
Oxygen Sensor: Service and Repair
Heated Oxygen Sensor (HO2S) Replacement Bank 1 Sensor 2
HEATED OXYGEN SENSOR (HO2S) REPLACEMENT BANK 1 SENSOR 2
REMOVAL PROCEDURE
1. Raise and suitably support the vehicle. Refer to Vehicle Lifting.
2. If equipped, disconnect the fuel composition sensor electrical connector.
3. Disconnect the connector position assurance (CPA) retainer.
NOTE: Refer to Heated Oxygen and Oxygen Sensor Notice in Service Precautions.
4. If equipped with a fuel composition sensor, remove the heated oxygen sensor (HO2S) electrical connector from the fuel line clip.
5. If equipped with a 4.8L or 5.3L engine, disconnect the HO2S electrical connector (2).
6. If equipped with a 6.0L engine, disconnect the HO2S electrical connector (2).
