I HAD THE SAME PROBLEM AS HoSeR4785 HAD. SO FOLLOWING DMAXMAVERICK'S FIX. HERE IS WHAT I DID, MARKED THE FRONT AND REAR OF THE DRIVE SHAFT SO WHEN IT'S TIME TO REASSEMBLE EVERY THING GOES BACK AS WAS. WHEN YOU PULL THE DRIVE SHAFT OUT OF THE TRANNY THERE IS NO TRANNY OR TRANSFER CASE OIL TO RUN OUT, THE TRANSFER CASE IS SEPARATE FROM THE TRANNY. THATS WHY IT IS IMPORTANT TO DO WHAT I AM ABOUT TO DO EVERY SO OFTEN. I COMPLETELY CLEANED THE SPLINE AND THE SLIP-YOKE OF THE OLD LUBE. I USED LUCAS RED "N" TACKY GREASE FORTIFIED WITH ANTI-SEIZE. ON THE SLINES ID AND OD. AND PUT A LIGHT COAT ON THE YOKE WHERE IT MATES WITH THE SEAL. I CHANGED THE OIL IN THE TRANSFER CASE AND USED RED LINE D4- ATF OIL 2 QUARTS DOES IT. WHEN I WAS DONE I TOOK THE TRUCK FOR A DRIVE AND IT WAS LIKE WHEN THE TRUCK WAS NEW.
WHAT A DIFERRENCE IT WAS LIKE A NEW TRUCK.