[pikespeakviewer]

Thanks everyone. That was one of the videos I watched to figure out how to change the speed controller.

I ended up unplugging the blower motor itself and tested the pins going to it. They were all fine. I plugged everything back in, said a few choice words and headed to get groceries.

When I got 1/2 way to the store I realized how hot it was and that my fan was off. Thinking the worse, I held my breath and turned the climate control on, and to my surprise, it worked as expected! All my fan speeds are there and the original parts are back in. I was able to return the replacement part (thankfully the guy at the parts counter was proud of me for trying to figure things out with a deployed hubby). I figure that something must have been loose and re-seating everything worked, for now at least.
Thanks for all your help!