A:AnswerThere is no "port". You can get an adapter like the ASWC-1, which is wired into the harness and then connected to the original steering wheel controls.
A:Answeryes you will need a dash kit and wiring harness to install depending on your 06 chevy you may need a special wiring harness / if your truck has factory alarm or on star
A:AnswerYes that is what I did, modules came one day and then the next day at the Radiohead arrived. I had my appointment and brought the pieces to the installer.
A:AnswerI shows it is compatible with SXM radio, as for if it works with it I don't have it to know for sure. this would be best if you went to Sony and asked them if that is the case.