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Cadillac
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Discussion Starter #1
Is there a way to change my factory radio with XM over to Sirius and have it work integrally with the radio like the XM does? I prefer SIR but don't want to have a seperate tuner cluttering up the interior.
 

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2004 Customized black on tan 3.6L CTS
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5,147 Posts
Get the SIR-GM1. Converts it to XM. Then just buy an antenna adapter off e-bay.

I have the SIR-GM1. It was a breeze to setup.
 

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Black the Darkside
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Nick is probably right but for my 2007 the XM antenna does not work for Sirius. I got that info directly from Sirius customer service. It will play but a big loss in quality. The 2007 radio changed but it may be the same radio for the CTS?
 

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2004 Customized black on tan 3.6L CTS
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5,147 Posts
Sirius says it wont work but it will. Just lookup xm sirius adapter on e-bay.


My sound quality in the CTS is no worse than xm. It does suck though, but no worse than the XM sound. HAHAHAHA

The SIR-GM1 kit will work on 04 to 07 CTSs. As will the adapter.
 
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