My 2004 Pontiac grand am is blowing steam from the vents then it over heats?
I don't know how to get it fixed?
One things for sure you have a leaking heater core, but unless you loose a lot of coolant it should not just instantly overheat, there maybe a underlying problem, possible a thermostat or I hate to mention, a blown headgasket as Grand Am's were known to blow them with just one overheat session. So you could bypass the heater core for now and then have the cooling system checked for a stuck thermostat or blown headgasket. Take it too a shop you trust, hopefully it is close by so you can get there quickly before it get too hot, they can look it over and tell what it is going to take to fix it.
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