LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2003 >> SSR LS >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust System >> Repair Instructions >> Catalytic Converter Replacement >> Removal Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Removal Procedure

  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Unclip the oxygen sensor connection from the floor reinforcement.
    3. Fig 1: View Of O2 Sensor Harness Routing And Harness Mounting Brackets
    GM664828Courtesy of GENERAL MOTORS CORP.
  3. Remove the oxygen sensor clips from the frame.
  4. Disconnect the connector position assurance (CPA) retainers.
  5. Disconnect the oxygen sensor electrical connectors.
    6. Fig 2: View Of O2 Sensor Harness Routing
    GM664951Courtesy of GENERAL MOTORS CORP.
  6. Unclip the oxygen sensors electrical connectors from the following:
    • Hose clip
    • Transmission crossmember
  7. Disconnect the CPA retainers.
  8. Disconnect the oxygen sensor electrical connectors (1, 2).
    9. Fig 3: View Of Left Exhaust Manifold Pipe & Nuts
    GM858550Courtesy of GENERAL MOTORS CORP.
  9. Remove the left exhaust manifold pipe nuts.
    10. Fig 4: View Of Right Exhaust Pipe Nuts
    GM858553Courtesy of GENERAL MOTORS CORP.
  10. Remove the right exhaust manifold pipe nuts.
    11. Fig 5: View of Exhaust Muffler
    GM1231421Courtesy of GENERAL MOTORS CORP.
  11. Remove the exhaust muffler nuts.
    12. Fig 6: View of Catalytic Converter
    GM1231424Courtesy of GENERAL MOTORS CORP.
  12. Remove the transmission support. Refer to Transmission Support Replacement in Frame and Underbody.
  13. Remove the catalytic converter.
    14. Fig 7: View Of Oxygen Sensors
    GM664954Courtesy of GENERAL MOTORS CORP.
  14. If necessary, remove the oxygen sensors.
scientia non olet · About LEMON Manuals