Jtsully

Hello,
i have a 1995 Chevrolet K1500 with the 4.3l vortex engine. I was driving down the road everything fine and seemingly for no reason slipped out of gear and I slowed down to a stop. I tried 123 and D and it wouldn't do anything. I got out and looked under the hood and there was transmission fluid all over my engine bay and transmission so much that I couldn't tell where it came from. It is not showing any codes and the transfer case is in gear. I am completely stumped. Please help