Long story short

I had the same thing happen with a reman one that I bought from Shucks ( now Orielly) I sent it in and they said that I sent them a core.... I said look this is the one you sent me that I had a shop install and it was bad out of box, long story short I was out over 300 for the labor...... Not to mention the hassle.

This is back when they covered the labor too.

This was before I became a mechanic