The one problem with car (that the owner told about that it was overheating and needed a new battery) So I went over to the auto parts store and brought a new battery and Dex cool. As soon I put in the Dex cool,the fluid leak out. I lifted up the car and check under it and saw two freeze plugs up inside that had fall out of the block and as well this is where the Dex cool was dripping out. This anyone know? What are the procedures to fixing this problem correctly ? To replacing the freeze plugs. The car is 1998 Grand Prix GTP SC. Thank you for your time and comments DAVE MC