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Home >> Chevrolet >> 2004 >> Avalanche 2500 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Control System - 4.8L, 5.3L & 6.0L (Introduction)) >> Repair Instructions >> Heated Oxygen Sensor (HO2S) Replacement Bank 2 Sensor 2 >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: View Of O2 Sensor Harness Routing And Harness Mounting Brackets
    GM664828Courtesy of GENERAL MOTORS CORP.
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Disconnect the connector position assurance (CPA) retainer.
    NOTE: Refer to Heated Oxygen and Oxygen Sensor Notice in Cautions and Notices.
  3. Remove the heated oxygen sensor (HO2S) connector clip from the frame.
  4. If equipped with a 4.8L or 5.3L engine, disconnect the HO2S electrical connector.
    5. Fig 2: View Of HO2S Electrical Connector - Bank 2 Sensor 2 (6.0L)
    GM694907Courtesy of GENERAL MOTORS CORP.
  5. If equipped with a 6.0L engine, disconnect the HO2S electrical connector.
    6. Fig 3: View Of Oxygen Sensors
    GM664954Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Excessive Force and Oxygen Sensor Notice in Cautions and Notices.
  6. Remove the HO2S.
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