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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 501 (Engine Controls/Fuel - Hybrid (LZ1) - Repair Instructions) >> Repair Instructions >> Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:

Refer to Heated Oxygen and Oxygen Sensor Caution .

    Fig 1: Locating HO2S Electrical Connector, CPA Retainer, Engine Wiring Harness Electrical Connector & Clip
    GM1960377Courtesy of GENERAL MOTORS COMPANY
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the connector position assurance (CPA) retainer (5).
  3. Disconnect the HO2S electrical connector (7) from the engine wiring harness electrical connector (6).
    4. Fig 2: View Of Exhaust Sensors
    GM1960379Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Excessive Force and Oxygen Sensor Caution .

  4. Remove the HO2S (3).
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