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