Congrats man! You may be one of the "lucky ones". Count your blessings ha ha.
If you read the majority of the posts here however, you'll see that more often than not, the problem is either not found, or not corrected after an attempt to do so.
I think one of the main problems, is that this "rattle" doesn't appear to be consistent from GC to GC. Some report it in the front by the wind deflector, others (like myself) report it above the passengers side rear door roof area. There are obviously several different things, causing several different rattles.
I will tell you this, NO service department is gonna go crawling around my Light and Dark Frost Beige leather interior, and tear apart my beige headliner, searching for something they don't even know what they're looking for, only to make a mess and not correct the problem. You gotta know when to hold 'em, and know when to fold 'em.
For the time being, I'll continue to look at my pristine, clean interior and headliner, and turn up the radio!!
2011 WK2 Grand Cherokee Overland 4x4 Edition 5.7L V8
Mineral Grey / Light-Dark Frost Beige Interior
Every option available except Rear Entertainment, (No kids - Panoroof Instead!)
"OVERLAND"; The American Range Rover!,
and a 1998 Grand Cherokee Limited with 210K that's still goin' Strong!!