Where is the 2000 Chevy Impala Coolant temperature sensor located a 3.4 engine?

The coolant temperature sensor is located on the passenger side radiator tank about 1/3 of the way down. It has a square back and faces toward the engine and is held in place by a spring clip. It has a two wire electrical connector and it is in direct contact with the radiator coolant via an o-ringed cylinder. You will loose coolant when changing it. If this sensor goes bad the A/C will not work, the temperature gauge will not work, fuel economy goes down, the low coolant light will light, and the cooling fans will run regardless of engine temperature.