First off.
1996 Bonneville SSEi.
151,xxx
swapped tranny 8,xxx miles ago.

My car will not start out in 1st gear, and the OD isnt engaging anymore.

I suspect driving around in the deep snow last night.
The car was driving normally last night and it didnt have an engine light on.
The transmission shifts 2-3 3-4 fine.
I never have harsh shifts and the tranny has never acted up before this. Please help?

Can you get it scanned for any stored codes?

No codes yet. I was very wary of driving it to the parts store. Does the issue sound electrical? Anything I can do before driving it to the store?

I'm just wondering if its in "limp-home-mode". But when its in that mode, it will start out in 3rd gear, not 2nd. Are you sure its starting in 2nd?

I think you were right about the limp mode.
I couldn't tell if it was 2nd or 3rd. I pulled it inside for a while and checked fluids. I just now pulled it out and it is operating like before.
What would cause this condition? I was driving through deep snow and some ice last night before I parked it.

Operating like before..aka Normal.
lol

Not sure, some things can cause the PCM to go into limp mode, but it'* hard to say.