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Home >> Chevrolet >> 2004 >> Impala SS >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Control System 3.4L (Introduction)) >> Repair Instructions >> Heated Oxygen Sensor Replacement - Position 1 >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
    IMPORTANT: The heated oxygen sensor (HO2S) 1 may be difficult to remove when engine temperature is less than 48°C (120°F). Excessive force may damage the threads in the exhaust manifold.
  1. Disconnect the heated oxygen sensor (HO2S) 1 electrical connector.
  2. Use the J 39194-B  to remove the HO2S 1. See Special Tools and Equipment .
    3. Fig 1: Removing HO2S
    GM73896Courtesy of GENERAL MOTORS CORP.
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