Been tunning with tbi for some time but need to look into the trailblazer because of a running problem.I'm using tuner pro for the tbi,what do I need for the obdll.
I don't know if TP supports the TB's or not.
Tunercat OBDII does,which means JET DST should.
You might try to download tiny tuner and it's database. I beleive I asked someone to add a TB I was working on to the database so it might be in there. You will still need something to flash in the .bin though.
Otherwise your options are EFILive or Hptuners,both of which support the P10? pcm i'm pretty sure.