Yeah this is fairly annoying. I bought a $40k+ car, and now because Kia can't make a part, I have been without it for 3 months. I have been on the phone with Kia corporate and there isn't much they can do. The best they can offer is covering $45/day for a rental car, but only reimbursing after the fact and no written documentation saying that they will honor that, just the word of a supervisor or lead in the customer affairs department.
Don't get me wrong, the people I have talked to over the phone at corporate have been very nice, but I am still without a car and there is no real solution. I have yet to ask them what they plan to do maintenance wise about my car sitting for this long without running. I am hoping that at the minimum they will at least cover an oil change if/when this part ever arrives.
From what the last support person was telling me, this same problem exists for the windshields of the Tellurides, so beware if you own one or are planning on getting one, they don't have any windshields to replace yours if it needs to be. Really Kia? You need to supply parts for your vehicles. I know they probably aren't too worried about this, but from my talking to friends about this experience has already dissuaded 2-3 people from purchasing a Kia, and one of those was seriously thinking about a Stinger. I still love the car (if I can ever drive it again), but Kia has completely turned me off on this to the point I doubt I will ever consider Kia again, and anyone that asks me for advice on getting a Kia is going to get negative information based on this event.
I invite you to change my mind Kia.