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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1844 (Engine Controls And Fuel - 2.4L (Lat) - Introduction (2 Of 2)) >> Repair Instructions >> Heated Oxygen Sensor 2 Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: A special anti-seize compound is used on the heated oxygen sensor threads. The compound consists of a liquid graphite and glass beads. The graphite will burn away, but the glass beads will remain, making the sensor easier to remove. New or service replacement sensors will have the compound applied to the threads. If a sensor is removed and is to be reinstalled, the threads must have an anti-seize compound applied prior to installation.
    Fig 1: HO2S
    GM1814566Courtesy of GENERAL MOTORS CORP.
  1. If necessary, coat the threads of the HO2S with anti-seize compound Saturn P/N 21485279 or equivalent.
    2. NOTE: Refer to Fastener Notice .
  2. Install the HO2S using the J 39194-C  .

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

    3. Fig 2: Identifying Engine Harness Electrical Connectors
    GM1648166Courtesy of GENERAL MOTORS CORP.
  3. Connect the HO2S electrical connector (4) to the engine wiring harness electrical connector (3).
  4. Install the CPA retainer.
  5. Lower the vehicle.
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