Audio Systems: siriusxm radio, sirius satellite radio, sir gm1

Question
I recently had a kenwood radio installed in my 2003 tahoe.  the radio has ipod/mp3 capabilities, siriusxm ready and bluetooth.  More over, I am not getting the same quality sound like I had with my factory radio.  Should I upgrade my speakers which I think is stupid because they are bose and sounded great before the change or put my factory radio back and try and connect the sirius radio to the factory radio.

Answer
you need to pull it ALL out to start a new system , factory amplifiers speakers and you will have some other problems ,

it will be better to go back to the factory radio, if it was xm ready you can add a sirius satellite radio  
you can also add a ipod interface to the factory radio

ipod for your vehicle

http://www.oemautosound.com/pc-515-139-pie-gm12-pods-ipod-interface-with-auxilia...

satellite tuner for factory radio SIRGM1

http://69.10.45.153/product/Product_Families/Tuners/Extras/SIR-GM1_Compatibility...