Where is bank 1 sensor 2 1999 Chevy Express 1500?

On a 1999 Chevy Express 1500, Bank 1 Sensor 2 refers to the oxygen sensor located after the catalytic converter on the driver's side of the engine. Bank 1 indicates the side of the engine with the number one cylinder, which is typically the driver's side for V8 engines. To access it, you may need to lift the vehicle and look under the exhaust system.