GMC Yukon Vacuum Hose Diagram

Two Days Ago My Heater Or Ac Will Only Blow Out Through The Defrost Vents. Rear Air Blows Correctly. Cannot Find Diagram Of Vacuum Hoses.

I Recently Removed My Vacuum Lines For A Valve Cover Replacement And Did Not Make Them And Some Broke. I Need A Diagram For The Vacuum Lines...

Just Overhauled The Engine But Did Not Mark, Or The Tape Fell Off, 1 Vacuum Line And 1 Vacuum Port. My Pcv Valve Connects To The Usual...

Need To Know , On The Heater Core, Which Is The Inlet And Outlet Tube, And Where The Vaccum Line For The Valve To The Core Goes. Thank You