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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1957 (Engine Controls And Fuel - 3.5L - Introduction) >> Repair Instructions >> Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Heated Oxygen Sensors
    GM1883810Courtesy of GENERAL MOTORS CORP.
    NOTE: A special anti-seize compound is used on the HO2S 1 threads. The compound consists of graphite suspended in fluid and glass beads. The graphite will burn away, but the glass beads will remain, making the sensor easier to remove. New or service sensors will already have the compound applied to the threads. If a sensor is removed from an engine and is to be reinstalled, the threads must have anti-seize compound applied before the reinstallation.
  1. Coat the threads of the HO2S with anti-seize compound GM P/N 12377953 or equivalent, if necessary.
    2. CAUTION: Refer to Fastener Caution .
  2. Install the HO2S (1). Use the J 39194-B  , if necessary. See Special Tools .

    Tighten:  Tighten the sensor to 42 N.m (31 lb ft).

    3. Fig 2: Heated Oxygen Sensors Electrical Connector
    GM1883806Courtesy of GENERAL MOTORS CORP.
  3. Connect the engine wiring harness electrical connector (3) to the HO2S electrical connector (2).
  4. Install the CPA retainer.
  5. Install the HO2S rosebud clip to the oil level indicator tube tab (1).
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