How to disable Onstar

Because Onstar is selling it's collected data on so equipped vehicles I would like to disable it in my '05 Silverado. Where can I find the unit?
Thanks,
Sonny01

The VCIM is located behind the passenger side airbag in the dash.

Thank you very much...can you reach it by taking the glove box out?

Because Onstar is selling it's collected data on so equipped vehicles I would like to disable it in my '05 Silverado. Where can I find the unit?
Thanks,
Sonny01

thats not all ...if big brother wants to know where you have been NO PROBLEM ! same thing with the cell phone unless you disable it.

I have my cell phone set to E911 GPS only...but that probably doesn't mean anything. During hurricane IKE I was stopped by a large tree which had blown across the country road I was on. I turned around and headed back and called 911 and explained there the tree was down blocking both lanes and the dispatcher wanted to know why I was headed away from where I said the tree was. Duh!