I brought my 2011 JGC Overland/Hemi to my mechanic (not JEEP) for a simple oil change and, as part of the multi-point inspection, he told me there was grease seeping from the rear inner axle boot on the driver side. Took it to the JEEP dealer; they said they need to replace the axle. They don't just replace the boot anymore. Part is on order. This is just a heads up to have your axle boots checked. Of course, this could be a problem just on my JEEP.
Axle boots along with all driveline items, fuel lines, suspension, etc should be checked with every oil change anyway. Kind of strange that they can't replace a cheap boot but have to replace the axle with it.
It is not that bad (have replaced a few in my day) plus alot cheaper than buying the whole axle. I just can't figure out why they don't offer just the boot. They have to make them to put on the axle to begin with.