Being a newbie here it's unfortunate that I have to start off on a sour note.
This is the letter I sent to Jeep. Let's see what happens. At this point I'm not a "happy camper".
"Within 2,598 miles the "check engine light" indicated a defective EGR bypass actuator. The part had to be back ordered, arriving one month later, requiring my Jeep an overnight stay at the dealership. A loaner was provided. In July of this year the Jeep began to exhibit symptoms that Service Bulletin 09-006-15 ENGINE describes. I have now been waiting since July for the dealership to receive the parts necessary for repair. In the meantime I am relegated to only use the car close to home, not feeling comfortable to take longer trips. When the engine parts do arrive I'll be the owner of a one year old vehicle with less than probably 8,000 miles with a rebuilt engine. A rebuilt is never the same as the original that came with the car from the factory. I have never, ever had problems like this with past new car purchases which enforces my reluctance to purchase another Jeep product. I truly cannot recommend this vehicle to anyone. I should have listened to Consumer Reports when they gave the diesel Grand Cherokee a worst reliability rating".
After a rethink I really want an engine replacement. Forget about a rebuild. I've heard horror stories, and experienced on my own, about rebuilt or refurbished products. I don't care what the manufacturers say a rebuilt is never as good as the original. That's my story and am sticking to it.