Sirius receiver...works only with factory radio?

[SedonaBound]

I'd like to confirm that when replacing the OEM changer head unit with an aftermarket unit, the OEM Sirius box ("digital rcvr") isn't reconnected via the new (GMOS-4) harness and becomes ballast.

 

[SedonaBound]

I called Metra and they told me the harness doesn't connect the Sirius. I get the impression that there's some proprietary GM issue.

 

[Renagade132]

I think you might be right, but you can always stop by a local Best Buy, and they are usually very helpful with that, he wise they sell the connecting harnesses, along with adapters, connectors, and mounting plates along with radios, if you want to install it yourself.

 

[SedonaBound]

I believe the sat radio box is the receiver, but the channel selection function (tuning) is in the audio head.

 

[Graham2990]

You are correct. The factory Sirius box is proprietary to GM head units. Similar to how some aftermarket units are specific to Clarion or Kenwood for example.

You you could always use a generic vehicel connection kit. Most run through FM radio or auxiliary inputs.