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Originally Posted by wannabeH3
marin, i dont need to add the onstar module do i? its pretty expensive for a feature i dont even use anymore....
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thats a very good question. im not sure of the answer.
i know that the connector from the truck plug into it and then you have to soughter the cables coming out of the module with the ones of the nav unit.
i think you can, but you will need to know which wires are which, you know speaker wires, mute wire and whatever else there is. unfortunately i dont know what would be the best way of doing this. maybe someone that has done this already will pop in.
i agree that if your not using it spending the money is pointless.