I bought a 1994 Chevy Cheyenne that has been sitting for 8 months. They cranked it once a week, but didn't move it or work any of the accessories.

The problem is that only heat is blowing regardless of whether I have it on AC or not.

I can go through the defrost to floor sectors and the air flow moves as expected. I can go from low to max and each level increases as expected.

If I turn the unit off, I can still feel hot air if I push my hand against the vent even though it's not technically blowing.

My friend said it was the blend door. I have no idea what that is or how to get to it. Does anyone know where that is located and what I need to check to see if it is working?

Thanks,
P

 

Somewhere in the dashboard. And you already know it isnt working. It is stuck on hot. Bring it to an AC guy and just get it replaced.