2001 serria w/5.3

[byrd76]

i noticed a coolant leak and after looking at engine i saw water dripping from where the air cleaner hose connect by throttle under there is a metal line
tha y's off i can see coolant spraying out of line does anybody know where these lines go they are headed toward rear of engine

any help would be great and if anyknow where i can find a diagram of this on the internet that would be fantastic i can be reache at byrd7@comcast.net

thank you