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Removal Procedure

WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of HO2S & Electrical Connector
    GM1389438Courtesy of GENERAL MOTORS CORP.
  1. Remove the heated oxygen sensor (HO2S) connector position assurance (CPA) retainer.
  2. Disconnect the HO2S lead (2) from the engine harness electrical connector.
  3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
    4. Fig 2: Identifying Wheel Drive Shaft Heat Shield
    GM1650818Courtesy of GENERAL MOTORS CORP.
  4. Bend the heat shield trough (2) down slightly until the HO2S lead (1) can be removed.
    5. Fig 3: Identifying HO2S
    GM1650820Courtesy of GENERAL MOTORS CORP.
  5. Remove the HO2S.
    6. Fig 4: Identifying Catalytic Converter And Muffler Pipe
    GM1650812Courtesy of GENERAL MOTORS CORP.
  6. Remove the catalytic converter to muffler pipe nuts.
  7. Pull the muffler pipe rearward and down until the studs are removed from the catalytic converter.
    8. Fig 5: Identifying Catalytic Converter
    GM1650775Courtesy of GENERAL MOTORS CORP.
  8. Remove the catalytic converter pipe to exhaust manifold nuts.
  9. Remove the catalytic converter.
  10. Remove and discard the exhaust gaskets.
  11. Clean the flange mating surfaces of any remaining gasket material.
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