I have a 2000 blazer 4x4 LT. The push button switch lit up in all modes 2 hi,4hi,4 lo, and auto then went off. The module was clicking and shifting on its own. It was killing my battery by shifting on its own and staying on some how with the blazer turned off. I found corrosion on two pin with 4 pin connector. It was the orange wire and one of the black wires. On the 32 pin connector I found 2 pins that had some corrosion on then, but cleaned then two and applied die electric grease to then to prevent moisture. Reconnected everything back the lights came on and the transfer case control module started clicking again, but then every thing stopped. All lights went off on the 4x4 switch and no sound from the module. I can't find the fuse or any diagrams for this model. The blazer will run, but not fast it can't decide which gear to be in lol. Is it possible to put it in 2 wheel drive manually for now???????? and does anyone know where I can get a wire diagram on the transfer case control module with 2 plugins that has a 32 pin plugin and a 4 pin plugin, with red,2blacks, and one orange wire. I need help I have to get this blazer running again.