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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 357 (Engine Controls And Fuel - Hybrid (LZ1) - Repair Instructions) >> Repair Instructions >> Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 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: HO2S And Components
    GM1960375Courtesy of GENERAL MOTORS CORP.
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. If equipped with 2 wheel drive (2WD) perform the following steps, if equipped with 4 wheel drive (4WD) proceed to step 5.
  3. Remove the connector position assurance (CPA) retainer (2).
  4. Disconnect the HO2S electrical connector (3) from the engine wiring harness electrical connector (5).
    5. Fig 2: Connector Position Assurance (CPA) Retainer
    GM1960373Courtesy of GENERAL MOTORS CORP.
  5. Remove the connector position assurance (CPA) retainer (2).
  6. Disconnect the HO2S electrical connector (4) from the engine wiring harness electrical connector (3).
    7. Fig 3: Exhaust And HO2S Sensors
    GM1960379Courtesy of GENERAL MOTORS CORP.
    CAUTION:

    Refer to Excessive Force and Oxygen Sensor Caution .

  7. Remove the HO2S (4).
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