It's possible that it may not have one.
Look for the radiator drain it should be on the side of the radiator facing the engine next to the fan.
The radiator drain plug on a 2001 Dodge Ram 3500 pickup truck with a 5.9 liter diesel engine is on the bottom inside corner of the radiator. It is on the driver's side.
Bottom of radiator.
screw it clockwise
Standing in the front of the engine, It will be on the bottom right corner of the radiator. Towards the engine.
Small plug on the bottom left(view from front) of the radiator.
You have the drain the lower radiator hose, 6.0 liter do not have a drain valve.
To change the engine coolant on a 2003 Chevrolet Malibu with a 3.1-liter engine, start by ensuring the engine is cool. Locate the radiator drain plug at the bottom of the radiator and place a container underneath to catch the old coolant. Remove the drain plug and allow the coolant to completely drain out. After replacing the drain plug, fill the radiator with a 50/50 mixture of new coolant and distilled water, then run the engine with the heater on to circulate the coolant and ensure there are no air pockets. Finally, check the coolant level and add more if necessary.
Look at the bottom or rear of radiator
Changing the thermostat on a 2002 Chevrolet 4.8 liter engine is simple to do. First, follow the upper radiator hose to the thermostat. Then drain the radiator hose. After the hose is drained, remove the clamps and bolts holding the thermostat housing in place. Then remove the old thermostat and replace with a new one.
bottom of radiator has plug normally 19mm wrench do not tighten to much it will break just snug it back.
It is on the lower passenger side of the radiator. Very tough to get to.