Hello! I have a peculiar problem, I acquired a 96 Yukon in august. I love it, it’* super cool for what’* been done to it.

last I knew it did have heat, but it’* been blowing cool air lately. I checked the hoses, both are hot and okay, checked the heater valve, appears to be working although the vacuum hose didn’t appear to be working, and seemed to be leaking either coolant or water when pushed in.

Coolant levels are all fine. All the normal stuff is in check, blower motor works fine.

haven’t tried to mess with the blend door actuators and the entire cooling system under the passenger side has cracks and plastic missing. I do notice there is hot air blowing out some creases on that under the passenger dash, and some corners blow cool. I know the climate control panel should be replaced too cause it’* old. Any ideas?

Sounds like your ducts are out of alignment or warped. The air goes where ever.

I agree with carfixer007 ^^^^^^^