Using the Tech2 select VT/VX Commodore and go to Body > BCM > Security > Program new key. you can also view fuel trims, emissions readyness (beyond a green LED for all OK) and It’ll talk to ALL the modules rather than just the ECM (and if you get into the $250+scanners, ABS) like BCM, SIR, entertainment, EVERYTHING on a GM.
10) This has been true since the first Global A vehicles were introduced in 2010 however, the Techline Customer Support Center (TCSC) continues to get calls asking for assistance after control modules have been switched on two vehicles.