I just had to replace the small vacuum line that attatches to the green plastic line that goes to the valve assembly. My dash air vents put out hot air and this heater valve was not working do to a split in the short small rubber vacuum line.
Anyway I had trouble finding the proper size. After 3 autoparts store stops I found some.
I had to purchase 1 foot of it and only need an inch of it.
I cut my self a new one plus a spare.
So if anyone needs a replacement for this vacuum line or wants a spare the 1st 10 people who gives me their address here or privately I will mail them a replacement or spare.
As you can see I have a Journey, but I think other models probable have the same.
Safe travels Ron
2002 Winnebago Journey DL 34 ' Cat. 330 hp
Great wife and Charlie, Cavalier King Charles Spaniel RIP