[ChevyGuyNC]

I'm pretty sure I need to replace my heater core. Factory AC truck. It's got green rusty crap around it. Doesn't appear to be leaking, but I did find heater hoses disconnected when I bought the truck. Reconnected them, and still no leaks but I'm for replacing it before it fails and flood my cab. For an AC truck I've seen you DON'T have to do in the inner fender, just undo the four outside nuts and it comes out from the inside... Hoping that's true.