I have 2010 Silverado and haven't had any problems with OnStar Diagnostics I don't think you will either.

Yes, As long as you can update programmer with the download in the sticky above

Loaded latest update into predator, All I can say is WOW. The truck takes off almost like my vette would, I would recommend Predator to anybody looking for a hand held tuner.

2010 Chevy Silverado, 6.2 gas, speed limiter does not disengage when turned off with predator, any tips , tricks or advice would be appreciated.
Revision 9.4 16

Could the 9.9r14 revision work, The 7194 I purchased today wouldn't communicate with my Truck 2010 6.2 Silverado, I had to download the revision you have, just food for thought

I figured it out, I had to down load newer revision to the tool . Worked great after I did that!

Trying to tune a 6.2 Chevy Silverado and Predator I just purchased will not save original backup. What is my next move, Please Help!