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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 996 (Engine Controls And Fuel - 4.8L, 5.3L, 6.0L, 6.2L, Or 7.0L - Introduction (2 Of 2)) >> Repair Instructions >> Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (2500 Series - Cab/Chassis) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Refer to Heated Oxygen and Oxygen Sensor Notice .
    Fig 1: View Of Front HO2S, Electrical Connector & CPA Retainer
    GM1856452Courtesy of GENERAL MOTORS CORP.
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Unbolt the front propeller shaft from the front differential, if equipped with four wheel drive (4WD). Refer to 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).
    5. Fig 2: View Of Catalytic Converter HO2S
    GM1856443Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Excessive Force and Oxygen Sensor Notice .
  5. Remove the HO2S (1).
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