Thats what Im thinking also. I have always really liked those TB'ss. Back when I tuned my last truck 08 GMC 5.3 I had him take out 75% of the torque management in the engine and the tranmission. I wanted to leave just a lil bit in there. I have never understood why people wanna max everything out on something you drive everyday because your just asking for trouble. They put the TM in there for a few reasons and those of us that take alot better care of our stuff and maintain it alot better than the ones that dont, we have some room there to tweak on our rides but you still need to use your head about it.... just like leaving a lil TM still in there.
I read awhile back that GM had a way now or was about to have a way to tell if you've messed with the pcm's any. That sucks but you cant blame them. So if you have tuned your ride then tore something up and then tune it back stock and take it back for it to be fixed under warranty they can get in there and see if whatever the problem is may have been caused by something you've changed in the pcm.
I got a 06 GTO a while back with the same LS-2 as your trailblazer and its all stock right now. A lil later when the money is lookin a lil better around here I plan on doing a few small things too it but I still wanna keep it mostly stock and keep the look stock too. thats one thing I really like about the car and the trailblazer ss they dont jump out and just make alot of attention with there looks......its just a simple and clean look thats perfect and most people dont expect anything from them! Oh yea is your ss 2wd or awd?