Exhaust system, before the muffler. You will have one convertor and possibly 2 pre convertors prior to that that look like mufflers. If you need a new one go to a muffler shop. They charge like 150 and the dealer will charge 800
On the catalytic converter
Upstream is screwed into the rear exhaust manifold. Downstream is screwed into the side of the catalytic converter.
The oxygen sensors are screwed into the exhaust on the rear of the engine. The upstream is before the catalytic converter, the downstream is after.
Between the exhaust manifold and the muffler. Follow the exhaust pipe and you will see the converter.
front of the transmission--between engine and transmission
between the exhaust maniflod and the cadillac converter
Right behind the motor in the front of the transmission.
A 2000 Chrysler Town and Country does not have a cabin filter.
There are two, one on each side of the catalytic converter.
It is in the exhaust pipe immediately behind the engine.
I trust you are asking about the catalytic converter, it is located on the exhaust pipe about 2 feet behind the engine. It looks like a muffler.
There is an upstream and downstream O2 sensor (bank1 and bank2). Upstream is located close to the engine bay in FRONT of the cat converter, and 2 is located behind the converter.