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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust System >> Repair Instructions >> Catalytic Converter Replacement (2.2L) >> Removal Procedure

Removal Procedure

WARNING: Always wear protective goggles and gloves when removing exhaust parts as falling rust and sharp edges from worn exhaust components could result in serious personal injury.
NOTE: When jacking or lifting the vehicle from the frame side rails, be certain lift pads do not contact the three-way catalytic converter as damage to the converter will result.
NOTE: Replacement of exhaust system parts must be OEM standard to ensure that the vehicle operates as designed.
  1. Raise and suitably support the vehicle. Refer to LIFTING & JACKING THE VEHICLE in General Information.
  2. Disconnect the heated oxygen sensor (HO2S) electrical connection.
  3. Fig 1: Heated Oxygen Sensor (HO2S) Electrical Connection
    G01660172Courtesy of GENERAL MOTORS CORP.
  4. Remove the catalytic converter to exhaust manifold pipe flange nuts.
  5. Fig 2: Catalytic Converter To Exhaust Manifold Pipe Flange Nuts
    G01660173Courtesy of GENERAL MOTORS CORP.
  6. Remove the muffler to the catalytic converter flange nuts.
  7. Fig 3: Muffler To Catalytic Converter Flange Nuts
    G01660174Courtesy of GENERAL MOTORS CORP.
  8. Remove the muffler from the catalytic converter.
  9. Remove the catalytic converter from the catalytic converter hanger.
  10. Fig 4: Catalytic Converter
    G01660175Courtesy of GENERAL MOTORS CORP.
  11. Remove the catalytic converter from the vehicle.
  12. Remove the heated oxygen sensors (HO2S) as necessary.