I have a 95 blazer 4.3 2wd and i was looking under the hood the other day and noticed that i was missing a vacum hose off the t piece around the vaccum cansister. The hose i am missing is the one that attaches to the bottom of the t piece i beilieve it runs threw the firewall and connects somewhere behind the dash but im not sure what it connects to. Does anybody know where the hose connects at? Could that cause my face vents to not blow air? Air blows out of the floor vents and defroster any help its gracefuly appreciated!

thanks

 

that vacuum line does feed the ac vacuum actuators. it usually runs under the brake booster.