My clunking noise is gone the dealer had to replaced the UJoints as well as changed the lubricant that was used and switch it to Chevy Posi Lock, as for my seal leak guys and gals beware donot scratch your transfer case if changing your rear seal onit, Take it out gently without the use of a screwdriver.Well all noises thusfar are gone and on a lighter note a TOYOTA will Never pull what a CHEVY can there is no tourque in a TOYOTA, There is a reason Chevy owners pay 2 times more in gas than a TOYOTA so all the CHEY people out there keep on TOWING and Trucking because CHEY is a REAL AMERICAN truck not a METRIC WIS WHEEL!!!!!! LOL!!!! Everyone on this site has been great and gave me the knowledge to ask the dealer the proper questions when my truck was serviced so I must say Loud and Clear THANKYOU ALL!!!!!