I'm new to the site, but was hoping someone could help me out. I have a 2002 Envo XL, Ive had Decent luck with it, some problems I don't think it should have for its age, like the Fan Clutch that I just had to replace...but in any case I recently noticed a coolant leak at the rear of the vehicle, I guess its for the rear heating and cooling. Has anyone had this issue? Can the Heating portion be replaced without disturbing the cooling portion? Thanks in advance!