Sir-gm1
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Joined: Sep 2005
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Sir-gm1
I have an 05 coupe and was wondering has anyone installed the Sirus SIR-GM1 directly to the head unit. My car has the Bose with nav and I have looked for the wires that would have been used if the car had come with XM. Any ideas my wife bought it for me for Christmas and this is the first time I have had the time for an install. Thanks ahead of time.
Safety Car
Joined: Sep 2006
Posts: 4,364
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From: Greer, SC
I have an 05 coupe and was wondering has anyone installed the Sirus SIR-GM1 directly to the head unit. My car has the Bose with nav and I have looked for the wires that would have been used if the car had come with XM. Any ideas my wife bought it for me for Christmas and this is the first time I have had the time for an install. Thanks ahead of time.
I had one in my 08 but my car came with XM installed. I have no idea whether GM used the same harness but my gut says they probably did. Check behind the carpet above the driver side rear wheel for the open connector. If it is there that is where you will plug the SIR-GM1 in. That is where the factory XM module is installed in coupes. You'll also need to run the antenna of course. If GM had a seperate harness for XM vs. Non XM I think using the SIR-GM1 is going to be nearly impossible.
Le Mans Master
Joined: Jun 2004
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From: Skippack PA
St Jude Donor '13
