I've got a throttle body with TAC module from an 03 Silverado for sale, I put a new one on from the dealer after my engine light coming on for TAC related codes but after replacing it, a week later all 3 codes came back, so my stock TB was not the problem unfortunately... So now i've got the stock TB layin around with no use for it so if someone needs one let me know... I dunno what the things go for used, but i was thinking $60 obo? New one cost me $200