Sierra 1500 2WD V6-4.3L (2008)
Oxygen Sensor: Service and Repair
Heated Oxygen Sensor Replacement - Bank 1 Sensor 1
Heated Oxygen Sensor Replacement - Bank 1 Sensor 1
Removal Procedure
Notice: Refer to Heated Oxygen and Oxygen Sensor Notice.
1. Raise and suitably support the vehicle. Refer to Vehicle Lifting.
2. If vehicle is a 2-wheel drive (2WD) perform the following steps, otherwise proceed to step 5.
3. Disconnect the connector position assurance (CPA) retainer.
4. Disconnect the HO2S pigtail electrical connector (7) from the engine wiring harness electrical connector (6).
5. If vehicle is a 4-wheel drive (4WD) perform the following steps, disconnect the CPA retainer.
6. Disconnect the engine wiring harness electrical connector (7) from the HO2S pigtail electrical connector (8).
