It started about a two weeks ago. Go to try to start my car and when I turn the key all the way, everything shuts down for about 15 minutes. The key is locked in place all electric item are down. But in 15 minutes everything thing starts working again and I can start the car. I say to myself weird and go on with my day. It happened a few more time but I can always start my car after 15 minutes. And after work it happens again and it has not start since. After some googling, I came across a few site talking about GM VATS, PassKey and PassLock systems and how to bypass them. My issues seems to look like a passkey issue or Theft detection problem. And I made this bypass from items bought at radioshack. Now I just need to remove to the TDM and wire in my bypass and hopefully my car will work again. Right my wife is using her dads car to and I'm using hers.
