I asked if he was working on an NV125 or an LWX500. He responded the LWX-500 according to the vin number. I then asked him to look at the rear of the transfer case, the side that faces the rear wheels, and look to see if there is a tag with NV125 on it and he said yes.

So how do I know which one I have? The easiest way is to look on the rear case. The rear case will have a round tag with NV125 or an engraving with LWX or ATC. When ordering parts or a complete transfer case, especially for 2000-2004 you want to check to make sure.
And whether you need parts or a complete reman unit, we got you covered.