There is a hard line on the back side of the engine block and the hard line sometimes cracks. i would check that line and see if it is leaking. If is not that hard line check your heater core hoses. Pressure test system to determine where leak originates
Leak in heater core
You have a coolant leak.You have a coolant leak.
why does the coolant only leak when engine is off on my 1999 grand am?
Head or head gasket leak
yes, especially if the leak is causing coolant to leak, you can run out of coolant. then overheat.
you have a coolant leak
In general, yes a coolant leak in a 2002 Bonneville can be fixed. The issue whether it is worth the money to fix the leak. If the coolant is leaking from an upper or lower coolant hose, the repair is simple and inexpensive. If the coolant leak is from the radiator, it will be a bit more difficult and/or expensive to repair. Moving up the scale, if the coolant leak is coming from a manifold gasket, it will be still more expensive. Likewise for a coolant leak from the heater core. And at the upper end of the scale, if you are leaking coolant from a cracked engine block, you're looking at replacing the engine.
There may be a system leak.
there are freeze plugs on side of engine if the leak is at the front, check to see if coolant is leaking from water pump and running down to bottom of engine
is coolant leaking from engine?or is it leaking from water pump and running down engine and appears to leak from engine
Yes, If to much leaks out this will cause the engine to over heat, smoke and or stall hence the name engine COOLant :)
coolant leak between motor and transmission indicates you have a leaky freeze plug in the rear of the engine block