When it was built, It had one.
Yes
If it came from the factory with a catalytic converter then it must have one
wiring diagram for firing order for 1992 Chevy silverado
1992 Chevy 1500
You cut it off of the exhaust system and replace it with a straight piece of exhaust pipe Know that it is illegal to remove a converter without replacing it with a new one.
the catalytic converter is on the exhaust pipe before the muffler . looks like a smaller version of one.
4L80
Behind the glovebox
just before the catalytic converter
To remove the catalytic converter on a 1992 Oldsmobile 88 Royale, first, ensure the vehicle is safely lifted and secured. Disconnect the exhaust pipes from the catalytic converter by loosening the bolts or clamps at both ends. Next, unbolt the converter from its mounting brackets and carefully remove it from the exhaust system. Finally, inspect all gaskets and connections for damage before reassembling.
No there is not.
no its sealed