I have a pontiac grand prix 1996 and it running hot what's the problems

A vehicle that overheats can be a nightmare because there are so many different things that can cause it. It might not even be one thing. It could be a combination of things. You might have a blown head gasket or a thermostat that’s stuck. Your coolant level could be low, or maybe your fan isn’t working, the radiator switch could be fouling out, your radiator could be clogged, you could have a leak somewhere, maybe in a freeze plug, cylinder heads, or it could be around the thermostat housing. It could be a combination of any and all of the things listed above.