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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 1 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: Identifying HO2S
    GM1631780Courtesy 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 Wiring Harness Electrical Connector
    GM1812206Courtesy of GENERAL MOTORS CORP.
  3. Install the HO2S connector clip to the thermostat housing.
  4. Connect the engine wiring harness electrical connector (3) to the HO2S.
  5. Install the CPA retainer.
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