Look at the bottom or rear lower section of radiator
where do i put coolant in for 1994 Chevy s10 pickup
usually the drain plug is located on the right side of the radiator it could be on the side or under the radiator if you still dont find one you can remove one of the water hose but that wont drain as much as the drain plug also known as cockpit
The plug should be beside of the bottom radiator hose, and screws out. If you have the model without the plug then the bottom radiator hose has to be removed to allow the coolant to drain.
Rear of the engine block, near the oil pan.
It is that drain plug looking thing at the bottom left of the radiator.
There are two block drain plugs, one on each side of the block, close to the motor mounts and oil pan.
On the 4.3L it is located next to the thermostat housing. The electrical plug to it has two wires.
there is no drain plug in the actual block there is a plug in the lower drivers side of the radiator. to flush the coolant out of the block just, run the motor with the heater on with a water hose in the rad filller until fluid coming out is clear.
To drain the oil on a 1991 Chevy S10 Blazer, located the oil pan drain plug. Use a wrench to remove the plug and the oil will flow into the receptacle you have provided.
Replace the drain plug gasket and don't over tighten it.
Standard or automatic?
Assuming you are asking about the radiator coolant drain, it should be on the passenger side under the lower radiator hose. It should take a 1/4" square drive to open it.