radiator draincock

Is there one on the factory radiator of an '89 GA 2.5 (U) engine ?

Didnt know if you got this taken care of, but Yes it should hav a drain on the driverside, bottom of radiator, it drain out under the crossmemeber below the radiator.

If it doesnt thiers a drain on the engine block in front, or remove (and recyle) the coolant from th ebottom radiator hose.
Hope this helps!