PIE only gives mono audio...
#1
#2
Did you try your Sirius Radio anywhere else, my buddy had this problem and it ended up being his Sirius unit. Plug a set of Headphones into your Sirius and test it that way. If no luck than contact whoever you bought the adapter from and see if they will send you a replacement. GOOD LUCK GETTING IN TOUCH WITH PIE, those a!@holes never return emails.
#3