Group using the GM3 and GM5 firmware for Onstar bluetooth, sat radio, Door chime, turn signal retention and steering wheel control, custom gauges, vehicle info, park assist... * see specific firmware for full feature list.
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Fri May 21, 2021 6:10 pm
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Tue Mar 23, 2021 5:11 pm
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Sat Feb 06, 2021 3:17 pm
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Fri Nov 20, 2020 9:47 am
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Fri Nov 06, 2020 1:59 pm
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