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Removal Procedure

NOTE: Refer to Oxygen Sensor Notice in Cautions and Notices.
IMPORTANT:
  • Remove oxygen sensors with the engine temperature above 48°C (120°F). Otherwise the oxygen sensors may be difficult to remove.
  • A special anti-seize compound is used on the oxygen sensor threads. New service sensors should already have the compound applied to the threads. Coat the threads of a reused sensor with anti-seize compound P/N 5613695 or equivalent.
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
    2. Fig 1: View Of Engine Wiring Harness & Right Oxygen Sensor Wiring Harness
    GM927856Courtesy of GENERAL MOTORS CORP.
  2. Disconnect the forward oxygen sensor electrical connector.
    3. Fig 2: Locating Oxygen Sensors
    GM932128Courtesy of GENERAL MOTORS CORP.
  3. Remove the forward (1) oxygen sensor from the exhaust manifold.
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