UPDATE: Called dealer, explained what I found on the rattling stereo. They wanted me to bring the car in for eval, but I sent pics instead. Part was ordered and arrived today. I was asked to bring the car in and they wouldn't let me just bring the broken part and swap them. Fine, but I want my buddy master tech to do the work, no problemo.
I arrive and go to service (first time ever LOL). Conversation went like this:
Rachel the advisor: I need your keys Mr. Speedy.
Me: No. No one can start the car.
Rachel puzzled: OK, please take me to where you parked.
Me: took her behind the service dept where I always park to pick up parts
Rachel: Please start your vehicle.
Me: You need me to start the car to replace the subwoofer?
Rachel perturbed: I have to connect our link system to create the ticket.
Me: Oooook
Rachel: I need your key please.
Me: No
Rachel: I need to put this tag on the key
Me: I'll just put it in my pocket
Rachel proceeds to connect up, and I tell her not to be so serious and relax. She replied "that's just my personality" and I said "well they can't take your birthday away".
About that time my tech buddy pulls up and says "man you ready to swap out that sub?"
Me: Hey can you tell Rachel to stop giving me a hard time about this car? She's mad I won't let her sit in it, touch it, or even look in it's general direction and laughed.
Rachel: Mr. Speedy no one asked to sit in your vehicle.
Me:
Ended up just working with my buddy, pulled the car in to his bay, took 2 minutes to swap the sub, then we chatted for a few. Took the rear view mirror tag back to Rachel and told her thanks and left.
I'm used to going in and cutting up with everyone and Rachel was SUPER serious lol.
Anyway, this fixed the rattle in the stereo. I originally thought it was due to the lack of sound deadening but turns out it was just the busted sub.