Found it. It was electrical taped to a wire loom up higher in the dash. Not really where the instructions say it is. Amazing how fast this goes back together.
I was able to find one. I had the local dealer do a parts search and he gave me a list of all the dealers in New England that had it in stock. First one didn't actually have it, second wouldn't sell it because it was for a customer, third one is shipping it to me now.
Can't find where to buy these online. I have some accessories I want to install and would like to use the factory switches. Found the install instructions here: https://www.gmupfitter.com/files/media/photo/1314/UI Bulletin 153_wip.pdf