What size and how long of a hose do I need to replace the PCV hose? Also with what little I could see back there it looks like there is a junction off the hose that comes off the valve? The valve doesnt seem to be able to be replaced. On a second note, the water doesnt make it to the rear. It seems to pour out behind the body of the Tahoe right before the driver door. Anyone know how I can fix that?