Sorry to be such a pest...but I'm in need of your expert advise regarding the two air vents on the floor behind the drivers and passenger seats, on the floor, facing the back of the van. I had the blower motor replaced recently and nothing is coming out of those vents when the heat is blowing hot air out the side vents on the panel on the drivers side of the back of the van. The dealer claims it's "fixed", but I swear that heat and air were coming out of those also before the motor died. Who's right???