I got a 94 k1500 with a np241 t-case in it, i replaced both output shaft seals for the front and rear drive shaft. It sounds crazy but it looks like the fluid is leaking out the rear driveshaft, i have sprayed it down and wiped it off a couple of times and i get the same result, the seal is high and dry and i'm a little stumped, anyone have this sort of ordeal?

 

Look around for a hole in the case.