Where are the oxygen sensors located in a 2000 deville dts?

In a 2000 Cadillac DeVille DTS, the oxygen sensors are located in two main positions: one upstream (pre-catalytic converter) and one downstream (post-catalytic converter) for each bank of the engine. The upstream sensors are typically located near the exhaust manifold, while the downstream sensors are positioned after the catalytic converter in the exhaust system. Accessing them may require lifting the vehicle or removing certain components for better visibility.