engine coolant

if you have no antifreeze then it wont be fine ,if its just lil rusty and dirty probaly be ok but it is good to change if you haven't changed since you bought it I would now , drain should be on bottom of radiator on engine side, left or right side, just be careful not to open when hot!! if you cant find it you can pull bottom hose off to drain

Where is the hose because I cannot find the plug. I do not think it has coolant, just water

https://www.google.com/search? q=2001+chevy+s10+lower+radiator+ hose&source=lnms&tbm=isch&sa=X &ei=FChfU6qeKqyayQH8iIG4AQ&ved =0CAkQ_AUoAw&biw=360&bih=297 #facrc=_&imgrc=DyiOAZ9159D4jM% 253A%3Bl9fDV0T8vYus9M%3Bhttp% 253A%252F%252Fi33.photobucket.c om%252Falbums%252Fd70%252Fcr azzedkid7391%252FDSC_0861.jpg% 3Bhttp%253A%252F%252Fwww.gmf ullsize.com%252Fforum%252Fshowt hread.php%253Ft%253D244142%3B 1023%3B680 H ere is pic of hose

Don't know if pic is working

It is probably 1.5 to 2 inch diameter black radiator hose. It Is black bottom radiator hose need screwdriver to loosen clamp

If you want to drain just the radiator, there should be a 'Wing Like Screw' called the 'Drain Cock' on the bottom of the radiator. This drain cock has a hole through it and does not come out completely. It just opens until it stops and the water will flow out from it. You should also do a "Radiator Flush" after it drains. Question: Is the Heater working ok? If yes, your Radiator Core is probably ok as well... Let us know, ok? De Bo

Ok. the pic didn't show up but your description is helpful, I will look for it, I assume it is the fatter hose?? And I do not think the screw is winged from a diagram I struggled to see, it looks like a nut

Oh, and yes, the heater works