Hello All, I have a 89 S10 4.3 and the vacuum hoses to the transfer case are completely gone. I know one goes to the actuator and on goes to the orb, but all I can find on the 3rd is it says to open air. What does that mean? And does the orb vacuum go to a tee that goes to the actuator and then to the actuator spot on the switch? Thanks.

 

The hose to open air is probably your transfer case vent tube. This link has diagrams for all of your vacuum hoses.

https://www.justanswer.com/chevy/4uf...e-routing.html