Sierra 2500 Denali 2WD V8-6.0L (2011)
3. Connect the HO2S (1) electrical connector to the engine wiring harness electrical connector (2).
4. Install the CPA retainer (3).
5. Install the front propeller shaft to the front differential, if equipped with 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).
6. Lower the vehicle.