pliers.....and a wetsuit!
Long stemmed pliers do work really well, you have to ease it out slowly, but it'll come. Then, as the pressure behind the valve overcomes the block of the valve...poof! it'll come flying out.
Then you, and anyone nearby, will get thoughroughly drenched, until you stick your finger in the gap (easier said than done) which can eventually get replaced by a hosepipe of other useful water removing device.
The 2004 GMC radiator drain is located on the bottom of the radiator. The radiator drain plug can be removed with a half inch ratchet.
The radiator drain plug on a Chevrolet Corsica is the lowest, skinniest hose on the back of the radiator. The radiator cap will have to be removed to allow for fast draining after this hose is removed.
The 2006 Ford Taurus radiator drain plug is located on the bottom of the radiator. The drain plug can be removed with a half inch ratchet.
The 1992 V-6 Pontiac Sunbird radiator drain plug, is located on the bottom of the radiator. The drain plug can be removed with a 5/8 socket.
The radiator drain plug is located on the bottom of the radiator on the driver's side. This plug must be removed before attempting to change the radiator fluid.
The bottom inside corner of the radiator.
There is a drain plug on the oil pan that when removed you get oil, and a radiator drain plug that when removed you get antifreeze/water. The radiator drain plug is located at the bottom of the radiator (very front of engine compartment). Typically you can find it by reaching up behind the front bumper and feeling for a large-ish wingnut. They are usually plastic, about the size of a quarter or half-dollar, and can be removed by hand.
Open the drain plug at the bottom of the radiator on the Cavalier if the plug is there. If the radiator is the model that does not have the plug, then the bottom hose needs to be removed to drain the coolant.
remove bottom radiator hose to drain system. flush system a few time before adding antifreeze.
look on the lower inside corner of the radiator
It is on the inside bottom right corner of the radiator. Towards the engine. It will be a plastic drain cock. It is hard to see, but it is there,
There is no drain. Loosen the clamp on the lower radiator hose at the drivers side and allow it to drain. The hose can be located from underneath the car once the plastic splash shield is removed.