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Home >> Oldsmobile >> 2002 >> Intrigue GX >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust System >> Repair Instructions >> Catalytic Converter Replacement >> Installation Procedure

Installation Procedure

  1. Install the heated oxygen sensor (HO2S).
    Fig 1: Installing HO2S
    G01759743Courtesy of GENERAL MOTORS CORP.
  2. Install the exhaust manifold gasket.
    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.
  3. Install the 3-way catalytic converter.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  4. Install the right exhaust manifold pipe stud nuts.

    Tighten 

    Tighten the nuts to 32 N.m (24 lb ft).

    Fig 2: Installing Exhaust Manifold Gasket
    G01759744Courtesy of GENERAL MOTORS CORP.
  5. Install the catalytic converter gasket.
  6. Install the catalytic converter bolts.

    Tighten 

    Tighten the bolts to 45 N.m (33 lb ft).

    Fig 3: Installing Catalytic Converter Bolts
    G01759745Courtesy of GENERAL MOTORS CORP.
  7. Remove the support from the exhaust system.
  8. Connect the heated oxygen sensor (HO2S) wiring harness connector.
  9. Inspect for leaks and underbody contact.
  10. Lower the vehicle.
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