There are references to this in the Wrangler sub-forum, but I didn't see any in the Grand Cherokee sub-forum. Check your fuses! The fuse panel at the front passenger side of the engine compartment, pop the lid off (it has a red + battery post cover on it, you can't miss it) by squeezing the two marked tabs inward and pull the cover off. Then PUSH DOWN all of the fuses in the box. My friend who has a JL 4xE just happened to ask me if I had checked my fuses when I was telling him about some of the weird electrical gremlins I've had with my GC 4xE. We went out in the parking lot and popped the hood, took off the fuse cover, and sure enough more than half of my fuses were not seated properly, and a couple of them were barely seated at all and were able to be pushed in another 2-3mm! Can't say much other than WTF?!? I saw on the Wrangler forum that some have reported their fuses working loose again over time from vibration, so might need to be a regular "check" to perform on the vehicle. I'll definitely check mine again in a few weeks and see if they've stayed seated or if any are working loose again. Jury is still out whether this will make any difference at all in solving mystery electronic issues, but definitely something to pay attention to.