Engine/Transmission (1998.5 - 2002) What transfer case do I have?

[Nickaru]

I have a 2001 3500 with an NV5600, but I need to know what transfer case I have. It could be a NV231, NV233, NV242, NV244 or an NV241HD.

I looking for the refill capacity to do an oil change and some vary.

Thanks

 

[cmills]

It should have a round tag on the back of the transfer case saying what model it is, at least my 99 does which is a NV241HD.

 

[krtcummins]

I have the heavy duty transfer case on my 01 2500. You can ID it by the side plate on the side of the case for a power take off. The standard one has none. My window sticker says "241HD"