Hello, I'm trying to find someplace or someone out there that sells the blower motor control module. AutoZone and O'Reillys no longer carry it and I don't think RockAuto does as well. I thought about going through ebay to look for one but I don't trust that site as much. Any tips that would point me in the right direction will be greatly appreciated.

 

Look on line. eBay, Amazon. I have gotten a couple off there, and actually thought about getting one for a spare.
Its not a hard item to find. I think the problem we run into is the minute you say "Hummer" since the name is so old. But remember that most of the parts in these trucks are from GM trucks. So it really a matter of getting the part with the GM part number.
Again it isnt hard

And usually online is ALOT cheaper

 

this is what i got from amazon as far as the control module. https://amzn.to/2AV8sKk i got this one over a year ago and its working good so far . all the local autoparts want an arm an a leg for this part for 120$ im pretty happy so far .