Low Coolant after flushing radiator

In my 94 G-AM V6, thermostat was replaced and the radiator was flushed. After this, "Low Coolant" light is on and it does not go off although the cooling system was bleeded about three times. So far the car runs fine. Does anybody have any idea about this issue?

I flushed my 94 G-AM V6. One issue is that the amont of drained coolant was about two gallons only rather than about four gallon. I used anout 1 inch thick hose connected to the engine block and radiator. My concern is that since only half of total coolant was replaced the antifreeze and water mixture ratio is 25/75 rather than 50/50. This may cause some problem during winter time. Initially I tried to open wingnut but no coolant was coming out of it. Is there any good way to drain the system completely?

I'm not sure why your antifreeze/water ratio would go to 25/75. If you had the proper 50/50 mix before and drained half, then added 2 gallons of 50/50 mix, then you should still have 50/50 in the system unless you somehow managed to drain more antifreeze than water when you drained the system.

I merged your two thread since they are on the same topic.

On the low coolant light, look here.
low coolant light coming on (http://www.automotiveforums.com/vbulletin/showthread.php?t=745431)

On the flushing, you can remove the bottom radiator hose to drain that out. Starting it will pump a little more out though dont run it to long.

If you did a flush you need to rise the system at least 3-4 times to get the corrosive chemicals from the flush out.

I would then just add 100% antifreeze to the mix so then it keeps the ratio higher. Then get a tester and see what level of protection you have.