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Home >> Saturn >> 2005 >> Vue Red Line, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 3.5L (L66) Introduction >> Repair Instructions >> Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 Replacement >> Removal Procedure

Removal Procedure

    IMPORTANT: Bank 2 are cylinders 2, 4, and 6 which are closest to the front of the vehicle.
  1. Turn the ignition OFF.
  2. Disconnect the bank 2 heated oxygen sensor 2 harness connector (2) and disconnect from the retaining bracket.
    Fig 1: View Of Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2
    GM1228621Courtesy of GENERAL MOTORS CORP.
  3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  4. Remove the left transmission mount just enough to gain access to the heated oxygen sensor. Refer to Automatic Transmission Mount Replacement - Rear in Automatic Transmission.
  5. Remove the heated oxygen sensor wiring harness bracket and bolt.
    6. CAUTION: Removal of the sensor is easier if the exhaust system is warmed up slightly. Be careful that it is not too hot to work on safely. Applying penetrating oil to the threads while moving the sensor back and forth will also aid in removal and will decrease the chance of exhaust pipe thread damage.
    Fig 2: Locating Heated Oxygen Sensor Bank 2 Sensor 2
    GM1226401Courtesy of GENERAL MOTORS CORP.
  6. Remove the bank 2 heated oxygen sensor 2 using the J 39194-C  .
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