Was under my truck today and noticed where the trans bolts to the t-case it had oil starting to seep on the bottom side. Any common issues here maybe? I am guessing it was t-case fluid b/c it was pretty dark and I just recently changed the trans fluid.

 

the back to back seals are leaking. there is 1 on the t-case and 1 on the trans.

 

Was able to get a clean sample today, it's def. trans oil b/c it's not red. Any idea what's involved in replacing this seal?

 

You just have to remove the front and back driveshafts. You need to put a jack stand under the transmision for suport and remove the cross member. Then you can unbolt the t-case and pull it off. Most of the time it's the rear transmision seal and it's easy to replace . I bought mine from the dealer and it was $10.

 

Probably wouldn't be a bad idea to replace both of them while you have it apart.