I'm having a heck of a time trying to find a new brake combination valve locally. All of the local parts places look at me like I have two heads when they can't find it in the computer. I know this part is still available through ACDelco (they are available at the "usual suspects" online). Does anyone know the ACDelco part # so I can just find a local ACDelco dealer and ask for it by number? I know that I can order it online, but I wanted to get it in my hot little hands for installation this weekend.