Find where it is leaking, and repair the leak, adding "Stop-leak" will possibly work, but may create more problems by doing so. If you can't find the leak, take it in for repair.
I'm assuming your grand am has a 3400 v6 which are known for intake and head gaskets leaking. so its possible that one of those gaskets are leaking so bad that coolant is leaking from intake/heads down onto your valvetrain and then down into your oil pan. more than likely its your intake gaskets leaking.
Coolent leaks from pasenger side of engine.
it is a big possibility it is leaking from your water pump. i have a 2001 intrigue 3.5l twin cam v6 leaking from the waterpump, and am currently replacing it as i type this.
water pump .(gasket,intake,hose)
no it will not
Heater core is leaking and needs replacement
It could be several things. Check the water pump and radiator first.
On the front left of the engine beside the coolant bottle..Belt driven but on the smooth side not the grooved (of the belt).
Many things can cause the car to overheat. 1. Low coolant caused by leaking hoses, water pump, intake manifold on v6 engine. 2. Bad headgasket on v6 engine causing coolant to overflow out of the reservoir jug. 3. Stuck thermostat. - TechJK ETC. -----------------------------------
ford probe,mazda 626,mazda mx-3,mx-6,929(kl v6 2.5l )
Check to see if there is coolant on the engine block. It is common for the Monte Carlos, along with other GM cars equipped with the 3400 V6 engine to experience leaking intake manifold gaskets. A leaking intake manifold will cause oil to leak into the coolant system and even worse, for coolant to leak into the oil system.
This sounds like a common problem with the 3.1L and 3.4L v6 of the lower intake manifold leaking. TechJK ----------------------