There is a special procedure, yes.
I think you need a scantool so that you can move the tps back and forth to achieve a certain initial voltage reading. I haven't done a tps on an LS1, but I'm sure someone has access to this info.
1995 (White) LT1 -- A4 -- Edelbrock Heads/Intake/Headers, LT4 Cam, Moroso CAI w K&N, traction bars, exhaust, built trans - SOLD, love my M6
1995 (Black) LT1 -- M6 -- lots of money dumped and it's still broke