Disconnecting OnStar
#1
Disconnecting OnStar
I just picked up a 2009 HHR and immediately started looking for ways to cut the satellite link to my car. Without getting into the why or the politics, I just don't need/want it. I've read every thread on this forum and seen a few youtube videos on the subject but still have questions. There are 2 units behind the right rear wheel once I pull the panels off. Of the 2, the one closest to the inside is larger and resembles every image and schematic telling me that it is indeed the ONstar unit. Once unplugged, I am no longer able to start the car. Has there been a change from the '08 to '09 models that's ties the computer to the onstar unit? I'm at a loss, thought I had this figured. Anyone with an '09 or newer ever disconnected this spy-box?
Thanks
Thanks
#2
interesting...try pulling the fuse? Since Onstar can disable newer vehicles I would say yes , its tied to the motors electronics...can always disconnect the ant and short out the port...that way no signals can be transmitted or recieved..
#5
I wonder if he uses a proxy IP address everytime he goes online, that way "they" can't see where he's typing from
#8
#10
Dave
If you unplug the incorrect connector from the VCIM you will indeed break the GM Hi Speed LAN from the rest of the vehicle. Each of the dozen or so modules in the vehicle are connected together on several computer networks(LAN). Although I am a bit surprised the vehicle will not start – my thought is it would not run well and give more than a few codes.
On the VCIM there should be a 16-cavity connector and two 12-cavity connectors. Unplug the 16 and one of the 12. The other 12-cavity will have 4 Tan wires and a Green wire – do not unplug this connector and see if the vehicle starts.
The Green wire is for the Low Speed LAN and the Tan wires are for the Hi Speed LAN. By not having the VCIM in the circuit you have broken the Hi Speed LAN which connects all the functional vehicle motion modules together. The FSM says the GM Hi Speed LAN only passes through the VCIM.
Or you could disconnect the Red/White wire on the 16-cavity connector – this supplies power to the VCIM. Or the Black/White wire on the same connector – this supplies the Ground. Or just disconnect the Coax wires from the VCIM – they are the antenna wires. No antennas, no transmission and no reception! Or just remove the #24 fuse from the BCM if you don’t want XM Radio as well. So there are a lot of ways to get done what you are looking to do.
Oh, by the way the other module that you see should be the Digital Radio Receiver(DRR) or XM Radio. It should have only one electrical connector.
Now that I’ve said all the above, my source is the 2009 FSM, I have never opened up the panel.
Also you might want to look at this:
https://www.chevyhhr.net/forums/how-tutorial-library-21/discontinuing-xm-radio-%93band%94-radio-23500/
If you unplug the incorrect connector from the VCIM you will indeed break the GM Hi Speed LAN from the rest of the vehicle. Each of the dozen or so modules in the vehicle are connected together on several computer networks(LAN). Although I am a bit surprised the vehicle will not start – my thought is it would not run well and give more than a few codes.
On the VCIM there should be a 16-cavity connector and two 12-cavity connectors. Unplug the 16 and one of the 12. The other 12-cavity will have 4 Tan wires and a Green wire – do not unplug this connector and see if the vehicle starts.
The Green wire is for the Low Speed LAN and the Tan wires are for the Hi Speed LAN. By not having the VCIM in the circuit you have broken the Hi Speed LAN which connects all the functional vehicle motion modules together. The FSM says the GM Hi Speed LAN only passes through the VCIM.
Or you could disconnect the Red/White wire on the 16-cavity connector – this supplies power to the VCIM. Or the Black/White wire on the same connector – this supplies the Ground. Or just disconnect the Coax wires from the VCIM – they are the antenna wires. No antennas, no transmission and no reception! Or just remove the #24 fuse from the BCM if you don’t want XM Radio as well. So there are a lot of ways to get done what you are looking to do.
Oh, by the way the other module that you see should be the Digital Radio Receiver(DRR) or XM Radio. It should have only one electrical connector.
Now that I’ve said all the above, my source is the 2009 FSM, I have never opened up the panel.
Also you might want to look at this:
https://www.chevyhhr.net/forums/how-tutorial-library-21/discontinuing-xm-radio-%93band%94-radio-23500/
Last edited by Sno White; 03-21-2013 at 11:27 AM. Reason: added link