I just installed these tonight on my '14 JGC Diesel, as ours didn't come with the tow package, but we had the dealer install the receiver and wiring. I heard of problems with the load leveling shocks and couldn't find them anywhere (even the dealer), so the $100 dollar air bag option seemed much better. Installing was kind of a pain in the arse as you have to cut the lower hole out below the springs to run the hose through, but I completed it in about 2.5 hours. We are going to pull a 25' travel trailer and even with the WD hitch it needed a little boost. If you do it, score the tabs in the lower spring cover and then cut/snap it off the rest of the way with tin/avaition snips. I also mounted the filler ports in the plastic trim right behind the rear jacking point, which is hidden, easy to reach, and had a relatively short run of hose to hook it up.