please identify these rear hoses/lines?
 

These are on the rear left of my 97 express 1500 Geneva conversion van. I have an AC leak, & I also have a coolant leak. Trying to fix both. Discovered this and well it seemed it may be one of the problems. What are these and how would I fix or get the parts? Thank you all in advance.
https://cimg2.ibsrv.net/gimg/chevrol...0e8ff0a93.jpeg
https://cimg7.ibsrv.net/gimg/chevrol...e1ebfe9c4.jpeg
https://cimg2.ibsrv.net/gimg/chevrol...d48b2902a.jpeg
My pup needed to photo bomb

It looks like the hoses from the rear heater or A/C unit that the conversion company put in.