Thank you for the info. Yeah I heard a lot of people having problems with the ls2 TB. My sensors are bad in mine and a stock ls2 TB are like $200 plus vs $130 for a ls3Not only is the LS3 TB a better choice, it is often quite a bit less expensive. Be sure to get the GM version and not an aftermarket knockoff. It is plug and play. At least it was in my experience. It has proven to be a lot more reliable and though it is only anecdotal evidence I think my LS2 runs better with a stock LS3 TB than it did with a stock or ported LS2 TB.
Wow, literally sounds like what I’m going through. Except I didn’t replace the pedal. I checked the voltage on it and it was fine. I hope I order the right TB.That was exactly what I was dealing with, it was constantly throwing codes and going into limp mode. I tried changing the pedal, I scrutinized and tested the wiring numerous times. I just couldn't see how the TB was bad and I tried two different LS2 TBs but the second I installed an LS3 TB my problems disappeared. I hope the same experience for you.