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Home >> Chevrolet >> 2017 >> SS Automatic Trans >> Repair and Diagnosis >> Engine Mechanical >> Exhaust System >> Repair Instructions >> Catalytic Converter Replacement - Left Side >> Installation Procedure
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Installation Procedure

  1. Install the left pre-catalytic converter HO2S. Refer to Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 .
  2. Fig 1: Left Catalytic Converter
    GM1949679Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Make sure that a NEW sealing ring is fitted prior to installation. Failure to comply may cause the exhaust system to perform poorly.

  3. Install the left catalytic converter (1) to the vehicle.
  4. Fig 2: Intermediate Exhaust Assembly To Left Catalytic Converter Retaining Nuts
    GM1947042Courtesy of GENERAL MOTORS COMPANY
  5. Align the exhaust crossover pipe assembly (2) to the left catalytic converter (1).
  6. CAUTION:

    Refer to Fastener Caution .

  7. Install the exhaust crossover pipe assembly to left catalytic converter retaining nuts (3) and tighten to 40 N.m (30 lb ft).
  8. Fig 3: Left Pre-Catalytic Converter Heated Oxygen Sensor (HO2S) Electrical Connector
    GM1950735Courtesy of GENERAL MOTORS COMPANY
  9. Connect the left pre-catalytic converter HO2S electrical connector (1).
  10. Fig 4: Left Catalytic Converter To Exhaust Manifold Retaining Nuts
    GM1949706Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Push up and forward on the left catalytic converter (2) to connect to the exhaust manifold (3).

  11. Connect the left catalytic converter (2) to the exhaust manifold (3).
  12. NOTE:

    Do not fully tighten the left catalytic converter to exhaust manifold retaining nuts (3) at this stage.

  13. Install the left catalytic converter to exhaust manifold retaining nuts (1).

    Do not fully tighten at this stage.

  14. Lower the vehicle.
  15. Tighten the left catalytic converter to exhaust manifold retaining nuts (1) to 45 N.m (33 lb ft).
  16. Make sure that the exhaust system is clear of all other components and chassis. If the exhaust system is not clear of all the other components loosen all retaining nuts and re-align. Refer to Exhaust System Alignment .
  17. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .