Not entirely sure if anyone else has dealt with this, but I've been fighting this battle for a while now, and it looks like you have the same issue. Your GPS position is wrong. I can tell you that 80 xx.xxx south and 28 xx.xxx east is on the Antarctic ice sheet. Pretty damn far south too...
I realize this is rather old, but figured it could be helpful to add my 2 cents. I bought my JLU sport in August 2018; currently have 31k miles on it (I tend to scroll those on). Sunday's temperatures here in balmy NJ were approaching 110, but we had a trail ride planned and I was taking part...
I'm going to take mine back to the dealer as well. I have nearly 30k on my 2018 JLU sport, and the satellite radio reception is worse than I've ever seen on any vehicle - and I've been in quite a few. I've even got the directionality down - southeast is by far the worst, even if there are open...