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Home >> Pontiac >> 2005 >> GTO Standard >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust System >> Repair Instructions >> Catalytic Converter Replacement (Left Side) >> Installation Procedure

Installation Procedure

    Fig 1: Locating Catalytic Converter To Muffler Flange Bolts
    GM1557623Courtesy of GENERAL MOTORS CORP.
  1. Position the catalytic converter assembly to the vehicle.
    2. NOTE: Refer to Fastener Notice in Cautions and Notices.
  2. Install the catalytic converter to exhaust manifold flange retaining nuts (1).

    Tighten:  Tighten the catalytic converter to exhaust manifold flange bolts to 25 N.m (18 lb ft).

  3. Install the catalytic converter to muffler flange bolts (1).

    Tighten:  Tighten the catalytic converter to muffler flange bolts to 40 N.m (30 lb ft).

  4. Remove the jackstand supporting the right side catalytic converter assembly.
  5. Install the oxygen sensors. Refer to the following in Engine Controls:
  6. Lower the vehicle.
    7. CAUTION: Refer to Exhaust Service Caution in Cautions and Notices.
    CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
  7. Connect the negative battery cable.
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