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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1309 (Engine Controls And Fuel - 4.3L - Introduction (2 Of 2)) >> Repair Instructions >> Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of HO2S
    GM1876458Courtesy of GENERAL MOTORS CORP.
    NOTE: A special anti-seize compound is used on the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the old sensor is to be reinstalled, the threads must have anti-seize compound applied before the reinstallation.
  1. If reinstalling the old HO2S, coat the threads with anti-seize compound GM P/N 12377953, or equivalent.
    2. CAUTION: Refer to Fastener Caution .
  2. Install the HO2S (3).

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

    3. Fig 2: View Of Engine Harness Clip & Electrical Connectors
    GM1876457Courtesy of GENERAL MOTORS CORP.
  3. Install the HO2S pigtail electrical connector clip to the engine wiring harness clip (3).
  4. Connect the engine wiring harness electrical connector (2) to the HO2S pigtail electrical connector (1).
  5. Install the CPA retainer.
  6. Lower the vehicle.
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