Like I said, you'll have to find out what the '96 setup is looking for.
I'm assuming the original t-case had a VSS on it, so you need to find out what it's output was, and get whatever replicates that. 40 pulse was the gm standard for quite awhile as I understand it, but I'm not up on the late-model stuff, so I'm not going to say that with certainty. A 1996 GM service manual set may tell you.