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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 75 (Exhaust System) >> Repair Instructions >> Nitrogen Oxides Catalytic Converter Replacement (LWN) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
  1. GM4596125Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Replace the exhaust gaskets with NEW gaskets.

    Catalytic Converter Gasket (3) - Install

  2. Nitrogen Oxides Catalytic Converter (2) - Install
  3. CAUTION:

    Refer to Fastener Caution .

  4. Catalytic Converter Nut (1) - Install and tighten [3x]50 N.m (37 lb ft)
  5. Exhaust Temperature Sensor-Position 3 (2) - Connect - Exhaust Temperature Sensor Replacement - Position 3
  6. GM4596037Courtesy of GENERAL MOTORS COMPANY

    Nitrogen Oxides Sensor-Position 2 (1) - Install - Nitrogen Oxides Sensor Replacement - Position 2

  7. GM4156077Courtesy of GENERAL MOTORS COMPANY

    Emission Reduction Fluid Exhaust Front Pipe Injector (1) - Connect - Emission Reduction Fluid Exhaust Front Pipe Injector Replacement

  8. GM4594833Courtesy of GENERAL MOTORS COMPANY

    Exhaust Particulate Filter (2) - Install - Exhaust Particulate Filter Replacement (LWN) 

  9. If replacing the Nitrogen Oxides Catalytic Converter with new, a NOx Catalyst Reset will need to be performed. NOx Catalyst Reset