Silverado 2500 4WD V8-6.6L DSL Turbo (2010)
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 (3).
4. Disconnect the HO2S (1) electrical connector from the engine wiring harness electrical connector (2).
Caution: Refer to Excessive Force and Oxygen Sensor Caution (See: Service Precautions/Excessive Force and Oxygen Sensor Caution).
5. Remove the HO2S (1).
Installation Procedure
Note: A special anti-seize compound is used on the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends
to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound
applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must
