Grand Prix V6-191 3.1L VIN M SFI (1998)
3. Install the catalytic converter gasket.
4. Install the catalytic converter bolts.
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Tighten the catalytic converter bolts to 45 Nm (33 ft. lbs.).
5. Remove the support from the exhaust system.
6. Lower the vehicle.
7. Inspect the exhaust system for leaks and underbody contact.
