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Old 12-13-2012, 05:11 AM   #5
daveyio87
 
Drives: 2010 SSRS
Join Date: Nov 2012
Location: Rochester
Posts: 26
It is possible the red light on the mirror is related to a dead back up battery on the onstar module. To check the firmware on the pdim. Plug something in and hold down the menu on the radio and the firmware should show on the display.
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