I have a 1995 corsica and have been using the green coolant. I was told that the green coolant would jell the radiator and water pump, is this so?

Rustybolt.

coolent is diffrent for themake and the year of the car, but i belive for newer cars you need the orange kind.

Typically, autostores sell "green" coolants that are compatible (if they weren't already) with coolant systems that 'require' (haha) longlife coolants, such as DexCool. If you haven't heard DexCool is currently the target of multiple class action lawsuits and the culprit for my coolant system leak (chemically eats engine gaskets and seals).

Longlife coolants such as Dexcool suck, beware!
http://www.salemboysauto.com/salem-faqs/default.asp?Action=Q&ID=68
http://www.consumeraffairs.com/automotive/gm_dexcool.html