Soooo, I just got off the phone with the dealer. The tech psi tested the cooling system (unsure of amount of time under psi) and he couldn’t find any leaks. I didnt follow up with any more psi testing questions; I dont want to be that guy who has to analyze every last thing. Its an engineer thing I guess. So they’ll go ahead and do the heater core if they have time before I get home on Thursday, otherwise I’ll wait until I head out for work again in 2-1/2 weeks.