I have a 1990 Cadillac Sedan Deville that has a coolant leak coming out of a metal line that is connected to the water pump. I can not find the name of this line in the book at all. I have tried finding a replacement line for it, but I was told GM stopped making this part in 1997, and AC Delco stopped making this part in 2004. Can someone please tell me the name of this line, and where can I possibly find a replacement.. Thanks Mandy