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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 199 (Engine Control System & Fuel - 4.8L, 5.3L, 6.0L, Or 6.2L - Introduction (2 Of 2)) >> Repair Instructions >> Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (2500 Series) >> Removal Procedure

Removal Procedure

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    Fig 1: View Of Left Rear CPA Retainer & Engine Wiring Harness Electrical Connector
    GM1704005Courtesy 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 (1).
  3. Disconnect the HO2S electrical connector from the engine wiring harness electrical connector (3).
  4. Fig 2: View Of Catalytic Converter Assembly HO2S's
    GM1704012Courtesy of GENERAL MOTORS CORP.
  5. Remove the HO2S (4).