A 2001uses R134a refrigerant.
Dexcool
The 2001 Chevrolet Impala has overhead valves (OHV).
The Orange Dexcool
Just beneath the lower radiator hose is the drain.
There is a low level sensor in the side of the radiator. They do go bad.
Liquid coolant
The only information I have found on this one is that it is located in the coolant pump.
134a
The low coolant sensor is located in the side tank of the radiator.jd
It uses the ORANGE coolant.
Type your answer here... where is the coolant sensor ona 2001 chevy prizm