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2013 Frame less Mirror retrofit
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08-22-2012, 11:09 PM
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DWALEX
Drives: Currently 2016-2SS, Future ZL1/Z28
Join Date: Jul 2010
Location: Kansas
Posts: 978
I think this mirror uses the Low Speed GMLAN serial data for auto-dimming. allowing it to compensate for the amount of light inside the vehicle like the display radio or Driver Information Center Display
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