Rectangular box on passenger side windshield??
07-14-2010, 06:43 AM
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Rectangular box on passenger side windshield??
What is in the rectangular box on the passenger side windshield on my new 2011 C6 coupe? I am guessing it is the GPS and/or XM antenna.
07-14-2010, 07:04 AM
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Onstar antenna.
