Hey guys,
I found a broken vacuum line in my 95 Blazer that runs to a T connector that is attached to the ball on the hood on the drivers side. I didn't notice it because the broken end is hanging down behind the engine. I have the vortec engine and I can't find where it attaches to. I'm sure this will fix my vent control problem.

 

not sure exactly but see if you can find a hard plastic line coming out of the firewall to reconnect it to

 

Not sure if the 95 is the same as my 96 but my hose connects to a plastic part (not sure what the part is called) on the intake that is under the air intake and radiator hose near the thermostat, there is another cable that is attached to the same part that goes into the firewall. Hope that helps.

 

Thanks guys,
The vacuum line attached to the back of the intake and I recharged my A/C so everything works now!