What others have said are correct. The AC and tensioner pulley will not be part of the 7/70 power train. Sensors, belts, seals, accessories are not part of the "drive train" by their warranty. Basically internal compnents are what is covered.

The leak is your pinion seal, somewhat common on Dodge Trucks and Jeeps. Not a big deal but do get it fixed, you do not want to run your rear with low levels of lube. They may or may not cover that, but my guess is not since it is a seal. It is not to costly, around $100.