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Home >> Chevrolet >> 2007 >> HHR LS, Automatic >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust System >> Repair Instructions >> Catalytic Converter Replacement >> Removal Procedure

Removal Procedure

NOTE: Do not bend the exhaust flex decoupler more than 3 degrees in any direction. Movement of more than 3 degrees will damage the exhaust flex decoupler.
    Fig 1: Exhaust Hanger Insulators
    GM1631765Courtesy of GENERAL MOTORS CORP.
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the exhaust muffler nuts.
  3. Pull back the muffler assembly in order to separate the muffler from the catalytic converter.
    4. Fig 2: Catalytic Converter
    GM1625682Courtesy of GENERAL MOTORS CORP.
  4. Remove the post catalyst heated oxygen sensor (HO2S). Refer to Heated Oxygen Sensor 2 Replacement or Heated Oxygen Sensor 2 Replacement .
  5. Remove the catalytic converter nuts.
  6. Remove the catalytic converter from the exhaust manifold.
  7. Remove and discard the catalytic converter to exhaust manifold gasket.
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