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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1191 (Engine Exhaust System) >> Repair Instructions >> Catalytic Converter Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Refer to EXHAUST SERVICE CAUTION in Cautions and Notices.
CAUTION: Refer to PROTECTIVE GOGGLES & GLOVE CAUTION in Cautions and Notices.
  1. Raise and suitably support the vehicle. Refer to LIFTING AND JACKING THE VEHICLE in General Information.
  2. Remove the connector position assurance (CPA) locks.
  3. Disconnect the oxygen sensor electrical connectors.
  4. Remove the oxygen sensor clips to the heat shields.
    NOTE: Refer to OXYGEN SENSOR NOTICE in Cautions and Notices.
  5. Remove the oxygen sensors.
    Fig 1: Removing Oxygen Sensor Clips To Heat Shields
    G01971216Courtesy of GENERAL MOTORS CORP.
  6. Remove the exhaust manifold nuts.
  7. Install adjustable jack stands under the front and rear of the catalytic converter.
    Fig 2: Exhaust Manifold Nuts
    G01971217Courtesy of GENERAL MOTORS CORP.
  8. Remove the exhaust pipe hanger lower bolts.
    Fig 3: Exhaust Pipe Hanger Lower Bolts
    G01971218Courtesy of GENERAL MOTORS CORP.
  9. Remove the exhaust pipe brace lower bolts.
    Fig 4: Exhaust Pipe Brace Lower Bolts
    G01971219Courtesy of GENERAL MOTORS CORP.
  10. Remove the exhaust muffler bolts.
  11. Remove the exhaust muffler gaskets.
  12. Lower the jack stands.
    Fig 5: Exhaust Muffler Bolts
    G01971220Courtesy of GENERAL MOTORS CORP.
  13. With the aid of an assistant remove the catalytic converter from the jack stands.
    Fig 6: Removing Catalytic Converter From Jack Stands
    G01971221Courtesy of GENERAL MOTORS CORP.
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