You need to drain the radiator before you remove it but if you use a clean pan to catch the coolant you can reuse it as long as it contains no debris or rust.
Jeep liberty cooling fan removal.
The radiator is the heart of the jeep cooling system and sits in front of the engine.
Replace liberty radiator part 1 of a 2 part series showing how to remove and replace the radiator in a 2002 2007 jeep liberty.
The old fan was seized up which caused overheating.
I replaced the fan on my 2004 jeep liberty 3 7 using this and it worked perfectly.