I'm having a problem I have an '87 V10 Suburban with a NP208 T-case, 700R4 and 10 bolt axles. The problem I'm having is that while driving I start to hear a real loud clicking noise come from the LF wheel. Almost like a bicycle freewheel. I'm almost positive that it's the crappy auto locking hubs trying to engage. But they shouldn't be if it's in 2H. So I think that my t-case is somehow working it's way into 4H trying to allow the hubs to engage. Is this something that can be fixed with an adjustemnt or do some hard parts need to be replaced? I've got new manual locking hubs that I'm going to be putting on but I don't want the front axle to always be engaged. And I need to know what to do. Any help would be appreciated.