My buddy has a 1995 Chevy blazer that I sold him some time ago. I Guess the ac and heat only blow out of the front defroster, no matter where the **** selector is at. I'm pretty sure its the **** for the vent selector on the dash.

I am trying to figure out the proper name for this thing, because I can't find it anywhere. Any ideas would be great!

 

That would be the "HVAC mode control switch". Make sure you have good manifold vacuum at it before replacing it.... might be a vacuum line issue under the hood

 

AHH, yes! Thank You! I couldn't for the life of me remember the name of it.

I will check the vacuum too. Thanks again!