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Home >> Buick >> 2009 >> Allure Super >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 5.3L - Introduction >> Repair Instructions >> Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 >> Removal Procedure

Removal Procedure

CAUTION: Refer to Heated Oxygen and Oxygen Sensor Caution .
    Fig 1: Bank 2 Sensor 2 Electrical Harness Connector
    GM1553099Courtesy of GENERAL MOTORS CORP.
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the connector position assurance (CPA) retainer.
  3. Disconnect the bank 2 sensor 2 electrical connector.
    4. Fig 2: Identifying HO2S
    GM1553063Courtesy of GENERAL MOTORS CORP.
  4. Remove the bank 2 sensor 2 from the catalytic converter.
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