I was doing a little bit of searching around on the internet today and noticed the exact same looking tuning cable that trifecta uses for its tunes for the newer model cobalts (red cable).
Now what gets me is that while trifecta will charge around $200 for one of its cables, this one is available for $50. So my question is has anybody had experience with this cable? If you search google for OBD SX you will find the cable. Here is also a picture of it. Just thought this might help if it does work for the same thing as it could save some people some money.