my girlfriends 2001 grand am se has a bad coolant leak what can cause the problm on 2001 Pontiac Grand Am

the car leaks bad coolant everytime she attempts to drive it and i dont know where its coming from what can cause the problem anybody with some advice for me please and thank you

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2 answers
Bad water pump most likely , or hoses...
You got to compression test system or check
We're it leaking visibly..
pressure test cooling system to confirm source of leak