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Heated Oxygen Sensor: Installation

WARNING: This page is about a different car, the 2003 Pontiac Bonneville, 2003 Buick Park Avenue, and 2003 Buick LeSabre. However, it is still accessible from the selected car via links, so may be relevant.
  1. A special anti-seize compound is used on the 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 sensors will have the compound applied to the threads.
  2. If a sensor is removed and is to be reinstalled, the threads must have an anti-seize compound applied before installation. Coat the threads of the HO2S with Anti-Seize Compound (5613695), if necessary.
  3. Install the HO2S and tighten to specification. See TORQUE SPECIFICATIONS . Connect HO2S harness connector. Connect the electrical connector tab to the bracket. Install the HO2S electrical connector retainer. Lower vehicle. Install the fuel injector sight shield.
Fig 1: Locating HO2S 1
G00158331Courtesy of GENERAL MOTORS CORP.


  1. A special anti-seize compound is used on the 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 sensors will have the compound applied to the threads.
  2. If a sensor is removed and is to be reinstalled, the threads must have an anti-seize compound applied before installation. Coat the threads of the HO2S with Anti-Seize Compound (5613695), if necessary.
  3. Install the HO2S and tighten to specification. See TORQUE SPECIFICATIONS . Connect HO2S electrical connector. Connect the HO2S electrical connector retaining tab. Install the splash shield. Lower vehicle.
Fig 1: Locating HO2S 2
G00158332Courtesy of GENERAL MOTORS CORP.