Hi Gary. Welcome to the forum! Yes, dealers should be installing the vacuum hose, but it seems that a lot of them do not. Mine was installed, but they never clipped the end to the suction port, so it didn't work until I did that. I don't think it's unreasonable for you to ask the dealer to provide you with another hose since they didn't install it for you. Their cost on that part is probably pretty small.
Ordered 9/19/16 -- Built 10/7/16 -- Delivered 10/27/16:
2017 Pacifica Limited - Molten Silver/Mocha
8 Pax - Vac - SafetyTec - UConnect Theater & Sound
20" Wheels - Tow - KeySense - Splash Guards