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Home >> Chevrolet >> 2003 >> Venture Base, Van Cargo Extended >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust System >> Repair Instructions >> Catalytic Converter Replacement >> Installation Procedure

Installation Procedure

NOTE: To prevent internal damage to the flexible coupling of 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.
  1. Install a new catalytic converter gasket.
  2. Install a new exhaust manifold pipe gasket.
  3. Position and support the new 3-way catalytic converter under the vehicle.
  4. Install the exhaust pipe to the 3-way catalytic converter with the catalytic converter nuts. Do not tighten the nuts.
    Fig 1: Installing Catalytic Converter Gasket
    G01485987Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  5. Install the exhaust manifold pipe nuts to the exhaust manifold pipe studs.

    Tighten 

    • Tighten the exhaust manifold pipe nuts to the exhaust manifold pipe stud to 35 N.m (26 lb ft).
    • Tighten the catalytic converter nuts to 34 N.m (25 lb ft).
  6. Lower the vehicle.
    Fig 2: Installing Exhaust Manifold Pipe Nuts To Exhaust Manifold Pipe Studs
    G01485988Courtesy of GENERAL MOTORS CORP.
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