I have a 06 Chevy 2500 Hd 4x4 with a transfer case problem. Would anyone know which type transfer case I have. My tag is missing. It has the 6.0 engine, auto, with the 3 push button electric shift. I think it has the NP 261 but not sure. It has a brg going down to the front drive shaft. Also does anyone know of a video on how to disassemble it and make repairs.

Any advice would be greatly appreciated, Thank you