@JKaechler I'm totally on board with you. I don't want big brother in my vehicle uninvited. I have 2008 and 2017 Denalis and plan on disabling both of them.
From what I've researched, you just have to pull the onstar module out from behind the radio. I has 2 antennas connected to it. One for XM, other for cellular. You need to pull the module apart and remove the SIM card. It's buried in the bottom. Install all boards back and reconnect.
Test by hitting onstar by hitting the call button - should get a no service message or something like that. Check out YouTube and other forums. There was one I found awhile back where a guy made a detailed thread about disabling his corvette and Denali.
Looks like it shouldn't take too long to do. Also to note, just simply removing the antenna won't disable it. If you are right next to a cell tower, it can still pick up signal. Hence pulling the Sim card.
From what I've researched, you just have to pull the onstar module out from behind the radio. I has 2 antennas connected to it. One for XM, other for cellular. You need to pull the module apart and remove the SIM card. It's buried in the bottom. Install all boards back and reconnect.
Test by hitting onstar by hitting the call button - should get a no service message or something like that. Check out YouTube and other forums. There was one I found awhile back where a guy made a detailed thread about disabling his corvette and Denali.
Looks like it shouldn't take too long to do. Also to note, just simply removing the antenna won't disable it. If you are right next to a cell tower, it can still pick up signal. Hence pulling the Sim card.