If you want to find out who the account holder is, contact Sirius and say you're with a dealer or something then ask them if they can look up the account by the ESN number. However, digging in and investigating this might end up getting your system shut off.
"We simply fixed the glitch" --The Bobs, Office Space
Chrysler ran all kinds of promos with Sirius. Some cars were sold with lifetime subs attached, yours might be one.
_________________________
2003 GTI 1.8T
Kenwood LZ800 & Nav/Addzest DRX-9255/MB Quart QSD 3-way/Autotek 5.1 Amp/Illusion Audio ND-10
OEM HIDs/Shaved Hood & Bumper/FK Badgeless Grille/18" BBS RC/APR 91 Chip/APR Turboback/Samco DV/H&R Premium Coilovers/Carbonio CAI/Samco Hoses/PowerSlot Slotted Rotors/Goodridge Stainless Lines
http://www.cardomain.com/id/veedubb8