LEMON Manuals: Even more car manuals for everyone
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 >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
IMPORTANT: A special anti-seize compound is used on the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-seize compound applied before the reinstallation.
    Fig 1: View Of Oxygen Sensors
    GM664954Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Component Fastener Tightening Notice in Cautions and Notices.
  1. If reinstalling the old sensor, coat the threads with anti-seize compound GM P/N 12377953, or equivalent.
  2. Install the HO2S.

    Tighten:  Tighten the sensor to 42 N.m (31 lb ft).

    3. Fig 2: View Of HO2S Electrical Connector - Bank 2 Sensor 2 (6.0L)
    GM694907Courtesy of GENERAL MOTORS CORP.
  3. If equipped with a 6.0L engine, connect the HO2S electrical connector.
    4. Fig 3: View Of O2 Sensor Harness Routing And Harness Mounting Brackets
    GM664828Courtesy of GENERAL MOTORS CORP.
  4. If equipped with a 4.8L or 5.3L engine, connect the HO2S electrical connector.
  5. Install the HO2S connector clip to the frame.
  6. Disconnect the CPA retainer.
  7. Lower the vehicle.
scientia non olet · About LEMON Manuals