Please Help Me!

OK i have a 94 sunbird Le. The problem is the cooling system. No matter how much coolant is in there is always overheats and steams like crazy. (THe fan never turns on) There's coolant in the resivoir. I've changed the thermostat, the cap, and put lots of coolant in were the thermostat housing is but it still over heats. There is no flow of coolant basically. Does anyone know what the prob might be and how much its going to cost to repair.

PLUS ive tried to remove a massive air bubble (if there was 1) and it didn't work.

I suggest you surf the repair sections of www.autozone.com. Their sections might lead you to an answer.

That your fan doesn't turn on is a problem, it should click on at around mid-upper temp. range.

Water pump has probably died! If the top rad hose don't get hot then it'll be that! Or an air pocket!

I found out today that it was the radiator was shot. Yea, i 500 job. Minus welll be the water pump.

YOU WONT BELIEVE THIS
After taken my car to a GM dealership and they said i needed a new rad b/c it was leaking, i just finished looking if i could find the hole(to fix it myself), i found a missing cap were you drain the coolant!!! I just fixed it. I fixed it for 5 bucks and the dealership said around 500$. Man are they going to get a mouthing of a lifetime tomorrow. And i even had to pay for them to see what was the problem!!!!!

I found out today that it was the radiator was shot. Yea, i 500 job. Minus welll be the water pump.
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Dont yell at them just yet. If it was just the plug you should have noticed it running out as soon as you add the coolant. I would fill it drive it around awhile make sure it works and then have some fun with them