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Big AL said:
Will the steering wheel controls work with an installed phone or a bluetooth unit? Since I have OnStar will I need a GPS antenna when I add the RNS-E?[/i]
I have just confirmed that OnStar still works after upgrading my Symphony II to the RNS-E. My adapter had the wires for phone though, so did the original harness going to the Symphony II.

I don't have steering wheel controls but since the RNS-E has nothing to do with a phone kit, everything should work as before.
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