Yukon XL 4WD V8-5.3L (2011)
Oxygen Sensor: Service and Repair
Heated Oxygen Sensor Replacement - Bank 1 Sensor 1
Heated Oxygen Sensor Replacement - Bank 1 Sensor 1
Removal Procedure
Caution: Refer to Heated Oxygen and Oxygen Sensor Caution See: Service Precautions/Heated Oxygen and Oxygen Sensor Caution.
1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle See: Maintenance/Vehicle Lifting/Service and Repair.
2. Unbolt the front propeller shaft from the front differential, if equipped with four wheel drive (4WD). Refer to Front Propeller Shaft Replacement
See: Transmission and Drivetrain/Drive/Propeller Shafts, Bearings and Joints/Drive/Propeller Shaft/Service and Repair/Front Propeller Shaft
Replacement.
3. Remove the connector position assurance (CPA) retainer (2).
4. Disconnect the HO2S electrical connector from the engine wiring harness electrical connector (3).