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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1126 (Engine Exhaust System) >> Repair Instructions >> Catalytic Converter Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: To prevent internal damage to the flexible coupling of the catalytic converter assembly, the converter must be supported. The vertical movement at the rear of the catalytic converter assembly must not exceed 6 degrees up or down.
    Fig 1: Exhaust Manifold Pipe Stud
    GM260064Courtesy of GENERAL MOTORS CORP.
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. If the vehicle is equipped with All-Wheel-Drive, remove the propeller shaft. Refer to Propeller Shaft Replacement in Propeller Shaft.
  3. Remove the catalytic converter nuts from the exhaust manifold studs.
  4. Remove the oxygen sensor. Refer to Heated Oxygen Sensor Replacement - Position 2 in Engine Controls - 3.4L.
    5. Fig 2: View Of Catalytic Converter Bolts
    GM739224Courtesy of GENERAL MOTORS CORP.
  5. Remove the catalytic converter bolts.
  6. Remove the catalytic converter.
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