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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1556 (Engine Exhaust System - 5.7L) >> Repair Instructions >> Catalytic Converter Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 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 and Gloves Caution in Cautions and Notices.
    Fig 1: CPA Locks & Oxygen Sensor Electrical Connectors
    GM676711Courtesy of GENERAL MOTORS CORP.
  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.
    6. Fig 2: Exhaust Manifold & Nuts
    GM676192Courtesy of GENERAL MOTORS CORP.
  6. Remove the exhaust manifold nuts.
  7. Install adjustable jack stands under the front and rear of the catalytic converter.
    8. Fig 3: Exhaust Pipe Hanger Lower & Bolts
    GM676717Courtesy of GENERAL MOTORS CORP.
  8. Remove the exhaust pipe hanger lower bolts.
    9. Fig 4: Exhaust Pipe Brace Lower & Bolts
    GM676712Courtesy of GENERAL MOTORS CORP.
  9. Remove the exhaust pipe brace lower bolts.
    10. Fig 5: Exhaust Muffler, Bolts & Gaskets
    GM676722Courtesy of GENERAL MOTORS CORP.
  10. Remove the exhaust muffler bolts.
  11. Remove the exhaust muffler gaskets.
  12. Lower the jack stands.
    13. Fig 6: Jack Stand & Catalytic Converter
    GM792386Courtesy of GENERAL MOTORS CORP.
  13. With the aid of an assistant remove the catalytic converter from the jack stands.
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