If the light is not flashing you can drive it until you can have it repaired. If the check engine light is flashing, park it. Otherwise you will do catastrophic damage to the catalytic converter costing several hundreds of dollars to replace.
The catalytic converter is found in the exhaust system between the engine and the muffler.
Plugged catalytic converter?
Normally a flashing check engine light means you have a misfire. Do not ignore this as an engine misfire will damage the O2 sensor and the catalytic converter which are very expensive to replace. Have this repaired immediately.
The catalytic converter(s) would be found in the exhaust system between the engine and the muffler.
A catalytic converter on a 2001 Chevy Venture van is located under the vehicle. Follow the exhaust pipe from the engine to the rear of the vehicle. The large object connected to the exhaust pipes between the engine, and the muffler at the rear, is your catalytic converter.
How do I reset the service engine light on a 2003 Chevy Trailblazer?
Nowhere. It attached to the exhaust pipe, not the engine.
Cars did not get catalytic converters until 74. Trucks were 81, or 82.
Low catalytic converter efficiency.
Maybe you should service the engine soon. :P
The 2.2 engine has one. The 4.3 engine has two, a small one and a bigger one.
Probably on the exhaust manifold before catalytic converter