The car is a 2007 Chevy Cobalt. I go in to auto diag, find the menu item that says program keyfob, but it will not communicate with the car. Did I A) get a dud or B) get a chinese knockoff? I registered the unit, I'm on wifi, and I downloaded the GM update file. I have a Maxidas DS708.
How is the internal battery of the key FOB? Did you test the buttons on the key fob and see if a TS 401 or equivalent that can test RKE output of remote to see if it detects any signal from each button?