Update on mine. I pulled the entire wiring harness out of the door and did a continuity test. The green/yellow wire seemed to be an issue. Circuit 6134 Which is the linear interconnect network (communication with the BCM). Replaced wiring harness with GM#84290987. Problem solved.
Did this get resolved? My 2015 is having the same issue. Checked the harness and power seems to be getting to both the switch and the window motor. Also I swapped the switches out for the ones from a buddies truck. No change. Help please.
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