Console radio communication loss, Front USB lost power, U18B4 Error

GMC Canyon 2020 Crew cab / 3.6L 20000 miles
Radio lost communication and no screen picture some lines, infotainment system restarts every few minutes trying to reestablish connection. Drains battery with 2.4-3.5 A current, even when the ignition key is out.
Northern Woods from Canada 3 years ago  
NO
Rank 7
6 reports 
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