· Premium Member
Unless GM has made an all in one switch there should be two of them in your door panel. One for express up and one for express down in models that contain the feature already. In order to make the swap you'll need to reprogram the window control module. A BCM reprogram is not necessary. If you're techy enough you should be able to reprogram the module on your own. I did not research actually reprogramming but in the long run the dealership can do that for you; seeing as it's a window control module and not the BCM it should be relatively cheap (fingers crossed). I can't tell you how to wire it up. This you'll have to research on as I don't have the time to look at each of the schematics and tell you wire A to wire B atm. Hopefully this gets you moving on your question.