No it just screws in. Cost depends on vendor. Less than $5 i would expect
The drain plug is located on the bottom of the radiator on the passenger side. Its not hard to see it. http://www.youtube.com/watch?v=JEoLFrg8IUI This video shows you how to replace a thermostat, but also shows where the drain plugs are.
It will be on the very bottom of the radiator either the left or right side. If you do not see a drain plug it might not have one. If it does not have one it requires you to remove the lower radiator hose to drain the radiator.
on the inside bottom corner of the radiator, looks like a wing nut.
The drain is located on the lower right of the radiator and is opened or closed with a screwdriver. It is a plastic plug that does not come out. The surge tank cap must be open for the antifreeze to drain.
toward the bottom of the radiator on the right (passenger) side. It is located in front of the AC compressor
The radiator on a 1995 Saturn is flushed by draining the coolant, refilling the engine with water, and adding a flush. It is allowed to circulate and drain before refilling with coolant.
The radiator drain plug should be located on the bottom of the radiator on the passenger side. Open that, let the old coolant flow into a drain pan, replace the drain plug once the coolant is out and the radiator is flushed, then fill it up through the radiator cap.
If it is a plastic radiator and it is stripped, no, if it is metal yes.
To change the antifreeze on a 2003 Saturn Ion-3, locate the drain plug on the bottom of the radiator. Drain the liquid into a pan before refilling it.
on the bottom . hard to see. if you break it you must replace the radiator
Additional explanation moved to discussion page.
Radiator drain plug is located on the bottom of the radiator on the passanger side. you may have to remove the lower splash shield to gain full access to the plug. to open the plug turn it 180` and pull out.