Where is 02 sensor on 2000 eldorado?

On a 2000 Cadillac Eldorado, the O2 sensors are typically located in the exhaust system. There are usually two sensors: one is positioned before the catalytic converter (upstream O2 sensor) and the other is after the catalytic converter (downstream O2 sensor). You can find them on the exhaust pipes, near the engine and the catalytic converter. For specific locations, it's best to refer to a repair manual or service guide for detailed diagrams.