the drain nipple is on the bottom of the radiator on battery`s side.
There should be a drain at the bottom corner of the radiator on the side facing the engine.
Drain plug? Either at the bottom or rear of radiator
Look at the bottom or rear of the radiator
Place something to catch the engine coolant beneath your 1990 Chevy Corsica radiator. Remove the radiator drain plug with a 9/16 ratchet. The engine coolant will drain out.
Generally on the bottom of the radiator.
Most drain plugs are on the bottom of the radiator they are called (pee-cocks). Some look like a wing-nut and sometime they look like bolts. It would be best if you look near the bottom on the radiator on either sides of the radiator for the drain plugs. I
If you take the grill off of the front of the vehicle you should be able to see the radiator. Look on the passenger side of the radiator, your wing nut type plug should be on the side of the radiator. The Jeep Cherokee radiator drain plug is plastic and very fragile. You should remove the lower radiator hose to drain the cooling system.
Easiest way is to just pull off lower radiator hose. Other option is theres a drain cock on the passenger side of the radiator where u can also drain it but it makes a mess.
Drain plug for what?
let engine cool -open radiator cap -move a large container under radiator drain fitting( it's hard to see- located on lower left corner of radiator)-attach 3/8" diameter hose to fitting to direct coolant into container- turn fitting counterclockwise-pliers may be needed.
there should be a bolt with 2 "horn" tips on the bottom center of it