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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- ADS Team
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- Joined: Mon Feb 05, 2018 9:18 am
on the back of the radio, make sure nothing is plugged into the W/R port (it's a headphone jack receptacle). If there is the radio gets confused and will shut down the steering wheel controls and may act funny till you shut the truck down.