Hole in engine coolant leak

Gprix0885Gprix0885 Member Posts: 2
edited January 2019 in Pontiac
I have a my G6 has my G6 has developed a serious coolant leak there is about a 1 inch diameter hole on the driver side of the block maybe 3 or 4 in below the coolant tank when you start the car coolant comes gushing out of this hole what would cause that
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